39477664 has 24 divisors (see below), whose sum is σ = 77868000. Its totient is φ = 19701696.

The previous prime is 39477661. The next prime is 39477677. The reversal of 39477664 is 46677493.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (39477661) 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, 25587 + ... + 27085.

It is an arithmetic number, because the mean of its divisors is an integer number (3244500).

Almost surely, 2^39477664 is an apocalyptic number.

It is an amenable number.

39477664 is a deficient number, since it is larger than the sum of its proper divisors (38390336).

39477664 is a wasteful number, since it uses less digits than its factorization.

39477664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2332 (or 2324 counting only the distinct ones).

The product of its digits is 762048, while the sum is 46.

The square root of 39477664 is about 6283.1253369641. The cubic root of 39477664 is about 340.5000255160.

It can be divided in two parts, 3947 and 7664, that added together give a palindrome (11611).

The spelling of 39477664 in words is "thirty-nine million, four hundred seventy-seven thousand, six hundred sixty-four".