139291164 has 30 divisors (see below), whose sum is σ = 364135464. Its totient is φ = 46430280.

The previous prime is 139291133. The next prime is 139291169. The reversal of 139291164 is 461192931.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139291169) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 214632 + ... + 215279.

Almost surely, 2^139291164 is an apocalyptic number.

It is an amenable number.

139291164 is an abundant number, since it is smaller than the sum of its proper divisors (224844300).

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

139291164 is a wasteful number, since it uses less digits than its factorization.

139291164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429927 (or 429916 counting only the distinct ones).

The product of its digits is 11664, while the sum is 36.

The square root of 139291164 is about 11802.1677669825. The cubic root of 139291164 is about 518.3715873059.

The spelling of 139291164 in words is "one hundred thirty-nine million, two hundred ninety-one thousand, one hundred sixty-four".