139425788 has 12 divisors (see below), whose sum is σ = 244634880. Its totient is φ = 69530112.

The previous prime is 139425787. The next prime is 139425821. The reversal of 139425788 is 887524931.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139425787) 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, 43973 + ... + 47036.

It is an arithmetic number, because the mean of its divisors is an integer number (20386240).

Almost surely, 2^139425788 is an apocalyptic number.

It is an amenable number.

139425788 is a deficient number, since it is larger than the sum of its proper divisors (105209092).

139425788 is a wasteful number, since it uses less digits than its factorization.

139425788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91396 (or 91394 counting only the distinct ones).

The product of its digits is 483840, while the sum is 47.

The square root of 139425788 is about 11807.8697486041. The cubic root of 139425788 is about 518.5385344506.

The spelling of 139425788 in words is "one hundred thirty-nine million, four hundred twenty-five thousand, seven hundred eighty-eight".