139944028500 has 288 divisors, whose sum is σ = 456761410560. Its totient is φ = 36031968000.

The previous prime is 139944028493. The next prime is 139944028507. The reversal of 139944028500 is 5820449931.

139944028500 is a `hidden beast` number, since 1 + 39 + 94 + 4 + 0 + 28 + 500 = 666.

It is an interprime number because it is at equal distance from previous prime (139944028493) and next prime (139944028507).

It is a super-2 number, since 2×139944028500² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139944028507) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 81885646 + ... + 81887354.

It is an arithmetic number, because the mean of its divisors is an integer number (1585977120).

Almost surely, 2^139944028500 is an apocalyptic number.

139944028500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139944028500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (228380705280).

139944028500 is an abundant number, since it is smaller than the sum of its proper divisors (316817382060).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

139944028500 is a wasteful number, since it uses less digits than its factorization.

139944028500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2352 (or 2337 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The spelling of 139944028500 in words is "one hundred thirty-nine billion, nine hundred forty-four million, twenty-eight thousand, five hundred".