139948229628 has 384 divisors, whose sum is σ = 397187481600. Its totient is φ = 42506601984.

The previous prime is 139948229627. The next prime is 139948229639. The reversal of 139948229628 is 826922849931.

139948229628 is a `hidden beast` number, since 1 + 3 + 99 + 482 + 2 + 9 + 62 + 8 = 666.

It is a super-2 number, since 2×139948229628² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139948229623) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1101954501 + ... + 1101954627.

It is an arithmetic number, because the mean of its divisors is an integer number (1034342400).

Almost surely, 2^139948229628 is an apocalyptic number.

139948229628 is a gapful number since it is divisible by the number (18) 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 139948229628, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (198593740800).

139948229628 is an abundant number, since it is smaller than the sum of its proper divisors (257239251972).

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

139948229628 is a wasteful number, since it uses less digits than its factorization.

139948229628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398 (or 390 counting only the distinct ones).

The product of its digits is 26873856, while the sum is 63.

The spelling of 139948229628 in words is "one hundred thirty-nine billion, nine hundred forty-eight million, two hundred twenty-nine thousand, six hundred twenty-eight".