39474820 has 48 divisors (see below), whose sum is σ = 103356288. Its totient is φ = 12303360.

The previous prime is 39474803. The next prime is 39474857. The reversal of 39474820 is 2847493.

It is a happy number.

It is a super-2 number, since 2×39474820² = 3116522828064800, which contains 22 as substring.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 39474820.

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, 11277 + ... + 14356.

It is an arithmetic number, because the mean of its divisors is an integer number (2153256).

Almost surely, 2^39474820 is an apocalyptic number.

It is an amenable number.

39474820 is an abundant number, since it is smaller than the sum of its proper divisors (63881468).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39474820 is a wasteful number, since it uses less digits than its factorization.

39474820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25660 (or 25658 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 39474820 is about 6282.8990123987. The cubic root of 39474820 is about 340.4918486954.

The spelling of 39474820 in words is "thirty-nine million, four hundred seventy-four thousand, eight hundred twenty".