39920470 has 16 divisors (see below), whose sum is σ = 73610208. Its totient is φ = 15578560.

The previous prime is 39920423. The next prime is 39920477. The reversal of 39920470 is 7402993.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39920477) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 48274 + ... + 49093.

It is an arithmetic number, because the mean of its divisors is an integer number (4600638).

Almost surely, 2^39920470 is an apocalyptic number.

39920470 is a deficient number, since it is larger than the sum of its proper divisors (33689738).

39920470 is a wasteful number, since it uses less digits than its factorization.

39920470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97415.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 39920470 is about 6318.2647934381. The cubic root of 39920470 is about 341.7683816403.

The spelling of 39920470 in words is "thirty-nine million, nine hundred twenty thousand, four hundred seventy".