139292738 has 32 divisors (see below), whose sum is σ = 240299136. Its totient is φ = 60052608.

The previous prime is 139292737. The next prime is 139292749. The reversal of 139292738 is 837292931.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (139292737) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23006 + ... + 28422.

It is an arithmetic number, because the mean of its divisors is an integer number (7509348).

Almost surely, 2^139292738 is an apocalyptic number.

139292738 is a deficient number, since it is larger than the sum of its proper divisors (101006398).

139292738 is a wasteful number, since it uses less digits than its factorization.

139292738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5498.

The product of its digits is 163296, while the sum is 44.

The square root of 139292738 is about 11802.2344494591. The cubic root of 139292738 is about 518.3735398438.

The spelling of 139292738 in words is "one hundred thirty-nine million, two hundred ninety-two thousand, seven hundred thirty-eight".