139477664 has 24 divisors (see below), whose sum is σ = 275244480. Its totient is φ = 69574336.

The previous prime is 139477621. The next prime is 139477687. The reversal of 139477664 is 466774931.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9257 + ... + 19095.

It is an arithmetic number, because the mean of its divisors is an integer number (11468520).

Almost surely, 2^139477664 is an apocalyptic number.

It is an amenable number.

139477664 is a deficient number, since it is larger than the sum of its proper divisors (135766816).

139477664 is an equidigital number, since it uses as much as digits as its factorization.

139477664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10292 (or 10284 counting only the distinct ones).

The product of its digits is 762048, while the sum is 47.

The square root of 139477664 is about 11810.0662148864. The cubic root of 139477664 is about 518.6028371641.

The spelling of 139477664 in words is "one hundred thirty-nine million, four hundred seventy-seven thousand, six hundred sixty-four".