39399470 has 32 divisors (see below), whose sum is σ = 77728896. Its totient is φ = 14260000.

The previous prime is 39399469. The next prime is 39399491. The reversal of 39399470 is 7499393.

It is a happy number.

It is a congruent 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 15 ways as a sum of consecutive naturals, for example, 26897 + ... + 28323.

It is an arithmetic number, because the mean of its divisors is an integer number (2429028).

Almost surely, 2^39399470 is an apocalyptic number.

39399470 is a deficient number, since it is larger than the sum of its proper divisors (38329426).

39399470 is a wasteful number, since it uses less digits than its factorization.

39399470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1696.

The product of its (nonzero) digits is 183708, while the sum is 44.

The square root of 39399470 is about 6276.8997124377. The cubic root of 39399470 is about 340.2750657578.

The spelling of 39399470 in words is "thirty-nine million, three hundred ninety-nine thousand, four hundred seventy".