139925788 has 12 divisors (see below), whose sum is σ = 244975752. Its totient is φ = 69932720.

The previous prime is 139925761. The next prime is 139925789. The reversal of 139925788 is 887529931.

It is a super-2 number, since 2×139925788² = 39158452294841888, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139925789) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5331 + ... + 17557.

It is an arithmetic number, because the mean of its divisors is an integer number (20414646).

Almost surely, 2^139925788 is an apocalyptic number.

It is an amenable number.

139925788 is a deficient number, since it is larger than the sum of its proper divisors (105049964).

139925788 is a wasteful number, since it uses less digits than its factorization.

139925788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15092 (or 15090 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 52.

The square root of 139925788 is about 11829.0231211204. The cubic root of 139925788 is about 519.1576450706.

The spelling of 139925788 in words is "one hundred thirty-nine million, nine hundred twenty-five thousand, seven hundred eighty-eight".