139097088 has 264 divisors, whose sum is σ = 458986528. Its totient is φ = 41803776.

The previous prime is 139097053. The next prime is 139097089. The reversal of 139097088 is 880790931.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139097089) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3234795 + ... + 3234837.

Almost surely, 2^139097088 is an apocalyptic number.

139097088 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 139097088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (229493264).

139097088 is an abundant number, since it is smaller than the sum of its proper divisors (319889440).

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

139097088 is an equidigital number, since it uses as much as digits as its factorization.

139097088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91 (or 61 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

The square root of 139097088 is about 11793.9428521593. The cubic root of 139097088 is about 518.1307243503.

The spelling of 139097088 in words is "one hundred thirty-nine million, ninety-seven thousand, eighty-eight".