39405946 has 16 divisors (see below), whose sum is σ = 62285184. Its totient is φ = 18661104.

The previous prime is 39405937. The next prime is 39405997. The reversal of 39405946 is 64950493.

39405946 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a plaindrome in base 12.

It is a junction number, because it is equal to n+sod(n) for n = 39405899 and 39405908.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 580 + ... + 8896.

It is an arithmetic number, because the mean of its divisors is an integer number (3892824).

Almost surely, 2^39405946 is an apocalyptic number.

39405946 is a deficient number, since it is larger than the sum of its proper divisors (22879238).

39405946 is a wasteful number, since it uses less digits than its factorization.

39405946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8445.

The product of its (nonzero) digits is 116640, while the sum is 40.

The square root of 39405946 is about 6277.4155510050. The cubic root of 39405946 is about 340.2937081456.

The spelling of 39405946 in words is "thirty-nine million, four hundred five thousand, nine hundred forty-six".