138499464 has 16 divisors (see below), whose sum is σ = 346248720. Its totient is φ = 46166480.

The previous prime is 138499453. The next prime is 138499481. The reversal of 138499464 is 464994831.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2885382 + ... + 2885429.

It is an arithmetic number, because the mean of its divisors is an integer number (21640545).

Almost surely, 2^138499464 is an apocalyptic number.

It is an amenable number.

138499464 is an abundant number, since it is smaller than the sum of its proper divisors (207749256).

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

138499464 is a wasteful number, since it uses less digits than its factorization.

138499464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5770820 (or 5770816 counting only the distinct ones).

The product of its digits is 746496, while the sum is 48.

The square root of 138499464 is about 11768.5795234599. The cubic root of 138499464 is about 517.3876177818.

The spelling of 138499464 in words is "one hundred thirty-eight million, four hundred ninety-nine thousand, four hundred sixty-four".