139916432 has 20 divisors (see below), whose sum is σ = 275534076. Its totient is φ = 68810880.

The previous prime is 139916431. The next prime is 139916461. The reversal of 139916432 is 234619931.

It can be written as a sum of positive squares in 2 ways, for example, as 60777616 + 79138816 = 7796^2 + 8896^2 .

It is a super-2 number, since 2×139916432² = 39153215887221248, which contains 22 as substring.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (139916431) 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, 70703 + ... + 72654.

Almost surely, 2^139916432 is an apocalyptic number.

It is an amenable number.

139916432 is a deficient number, since it is larger than the sum of its proper divisors (135617644).

139916432 is a wasteful number, since it uses less digits than its factorization.

139916432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143426 (or 143420 counting only the distinct ones).

The product of its digits is 34992, while the sum is 38.

The square root of 139916432 is about 11828.6276465193. The cubic root of 139916432 is about 519.1460738245.

The spelling of 139916432 in words is "one hundred thirty-nine million, nine hundred sixteen thousand, four hundred thirty-two".