39479890 has 16 divisors (see below), whose sum is σ = 71769240. Its totient is φ = 15635200.

The previous prime is 39479861. The next prime is 39479903. The reversal of 39479890 is 9897493.

39479890 is nontrivially palindromic in base 16.

It can be written as a sum of positive squares in 4 ways, for example, as 36832761 + 2647129 = 6069^2 + 1627^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18535 + ... + 20554.

Almost surely, 2^39479890 is an apocalyptic number.

39479890 is a deficient number, since it is larger than the sum of its proper divisors (32289350).

39479890 is a wasteful number, since it uses less digits than its factorization.

39479890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39197.

The product of its (nonzero) digits is 489888, while the sum is 49.

The square root of 39479890 is about 6283.3024756095. The cubic root of 39479890 is about 340.5064252430.

The spelling of 39479890 in words is "thirty-nine million, four hundred seventy-nine thousand, eight hundred ninety".