138867464 has 16 divisors (see below), whose sum is σ = 263673600. Its totient is φ = 68554512.

The previous prime is 138867433. The next prime is 138867497. The reversal of 138867464 is 464768831.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109232 + ... + 110495.

It is an arithmetic number, because the mean of its divisors is an integer number (16479600).

Almost surely, 2^138867464 is an apocalyptic number.

It is an amenable number.

138867464 is a deficient number, since it is larger than the sum of its proper divisors (124806136).

138867464 is a wasteful number, since it uses less digits than its factorization.

138867464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219812 (or 219808 counting only the distinct ones).

The product of its digits is 774144, while the sum is 47.

The square root of 138867464 is about 11784.2040036652. The cubic root of 138867464 is about 517.8454541118.

The spelling of 138867464 in words is "one hundred thirty-eight million, eight hundred sixty-seven thousand, four hundred sixty-four".