139057464 has 64 divisors (see below), whose sum is σ = 427875840. Its totient is φ = 36673920.

The previous prime is 139057441. The next prime is 139057469. The reversal of 139057464 is 464750931.

It is a super-2 number, since 2×139057464² = 38673956588222592, which contains 22 as substring.

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 Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139057469) 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, 29652 + ... + 34019.

It is an arithmetic number, because the mean of its divisors is an integer number (6685560).

Almost surely, 2^139057464 is an apocalyptic number.

139057464 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

139057464 is an abundant number, since it is smaller than the sum of its proper divisors (288818376).

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

139057464 is a wasteful number, since it uses less digits than its factorization.

139057464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63700 (or 63696 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 39.

The square root of 139057464 is about 11792.2628871646. The cubic root of 139057464 is about 518.0815204407.

The spelling of 139057464 in words is "one hundred thirty-nine million, fifty-seven thousand, four hundred sixty-four".