139321464 has 16 divisors (see below), whose sum is σ = 348303720. Its totient is φ = 46440480.

The previous prime is 139321463. The next prime is 139321519. The reversal of 139321464 is 464123931.

It is a super-2 number, since 2×139321464² = 38820940662206592, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139321463) 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, 2902507 + ... + 2902554.

Almost surely, 2^139321464 is an apocalyptic number.

It is an amenable number.

139321464 is an abundant number, since it is smaller than the sum of its proper divisors (208982256).

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

139321464 is a wasteful number, since it uses less digits than its factorization.

139321464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5805070 (or 5805066 counting only the distinct ones).

The product of its digits is 15552, while the sum is 33.

The square root of 139321464 is about 11803.4513596660. The cubic root of 139321464 is about 518.4091716961.

The spelling of 139321464 in words is "one hundred thirty-nine million, three hundred twenty-one thousand, four hundred sixty-four".