139799088 has 320 divisors, whose sum is σ = 493301760. Its totient is φ = 37324800.

The previous prime is 139799081. The next prime is 139799117. The reversal of 139799088 is 880997931.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139799081) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1915020 + ... + 1915092.

It is an arithmetic number, because the mean of its divisors is an integer number (1541568).

Almost surely, 2^139799088 is an apocalyptic number.

139799088 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 139799088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (246650880).

139799088 is an abundant number, since it is smaller than the sum of its proper divisors (353502672).

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

139799088 is a wasteful number, since it uses less digits than its factorization.

139799088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145 (or 133 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 54.

The square root of 139799088 is about 11823.6664364316. Note that the first 3 decimals coincide. The cubic root of 139799088 is about 519.0009021335. Note that the first 3 decimals are identical.

The spelling of 139799088 in words is "one hundred thirty-nine million, seven hundred ninety-nine thousand, eighty-eight".