139995072 has 84 divisors (see below), whose sum is σ = 458608176. Its totient is φ = 39997440.

The previous prime is 139995067. The next prime is 139995073. The reversal of 139995072 is 270599931.

It is a happy number.

139995072 is a `hidden beast` number, since 139 + 9 + 9 + 507 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (84).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139995073) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13329 + ... + 21392.

Almost surely, 2^139995072 is an apocalyptic number.

139995072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

139995072 is an abundant number, since it is smaller than the sum of its proper divisors (318613104).

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

139995072 is a wasteful number, since it uses less digits than its factorization.

139995072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34746 (or 34733 counting only the distinct ones).

The product of its (nonzero) digits is 153090, while the sum is 45.

The square root of 139995072 is about 11831.9513183583. The cubic root of 139995072 is about 519.2433175872.

The spelling of 139995072 in words is "one hundred thirty-nine million, nine hundred ninety-five thousand, seventy-two".