39993146 has 32 divisors (see below), whose sum is σ = 67184640. Its totient is φ = 17764096.

The previous prime is 39993143. The next prime is 39993203. The reversal of 39993146 is 64139993.

It is a junction number, because it is equal to n+sod(n) for n = 39993097 and 39993106.

It is not an unprimeable number, because it can be changed into a prime (39993143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45911 + ... + 46773.

It is an arithmetic number, because the mean of its divisors is an integer number (2099520).

Almost surely, 2^39993146 is an apocalyptic number.

39993146 is a deficient number, since it is larger than the sum of its proper divisors (27191494).

39993146 is a wasteful number, since it uses less digits than its factorization.

39993146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 958.

The product of its digits is 157464, while the sum is 44.

The square root of 39993146 is about 6324.0134408459. The cubic root of 39993146 is about 341.9756545943.

The spelling of 39993146 in words is "thirty-nine million, nine hundred ninety-three thousand, one hundred forty-six".