139407752 has 32 divisors (see below), whose sum is σ = 301929120. Its totient is φ = 59639040.

The previous prime is 139407743. The next prime is 139407757. The reversal of 139407752 is 257704931.

139407752 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (139407757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45098 + ... + 48089.

It is an arithmetic number, because the mean of its divisors is an integer number (9435285).

Almost surely, 2^139407752 is an apocalyptic number.

It is an amenable number.

139407752 is an abundant number, since it is smaller than the sum of its proper divisors (162521368).

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

139407752 is a wasteful number, since it uses less digits than its factorization.

139407752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93221 (or 93217 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 38.

The square root of 139407752 is about 11807.1059959670. The cubic root of 139407752 is about 518.5161742534.

The spelling of 139407752 in words is "one hundred thirty-nine million, four hundred seven thousand, seven hundred fifty-two".