139764432 has 20 divisors (see below), whose sum is σ = 361058240. Its totient is φ = 46588128.

The previous prime is 139764431. The next prime is 139764433. The reversal of 139764432 is 234467931.

It is an interprime number because it is at equal distance from previous prime (139764431) and next prime (139764433).

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139764431) 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, 1455832 + ... + 1455927.

It is an arithmetic number, because the mean of its divisors is an integer number (18052912).

Almost surely, 2^139764432 is an apocalyptic number.

139764432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

139764432 is an abundant number, since it is smaller than the sum of its proper divisors (221293808).

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

139764432 is a wasteful number, since it uses less digits than its factorization.

139764432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2911770 (or 2911764 counting only the distinct ones).

The product of its digits is 108864, while the sum is 39.

The square root of 139764432 is about 11822.2008103398. The cubic root of 139764432 is about 518.9580120546.

The spelling of 139764432 in words is "one hundred thirty-nine million, seven hundred sixty-four thousand, four hundred thirty-two".