393672885 has 16 divisors (see below), whose sum is σ = 630928896. Its totient is φ = 209608128.

The previous prime is 393672863. The next prime is 393672887. The reversal of 393672885 is 588276393.

It is not a de Polignac number, because 393672885 - 2²¹ = 391575733 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (393672887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12514 + ... + 30723.

It is an arithmetic number, because the mean of its divisors is an integer number (39433056).

Almost surely, 2^393672885 is an apocalyptic number.

It is an amenable number.

393672885 is a deficient number, since it is larger than the sum of its proper divisors (237256011).

393672885 is a wasteful number, since it uses less digits than its factorization.

393672885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43852.

The product of its digits is 2177280, while the sum is 51.

The square root of 393672885 is about 19841.1916224807. The cubic root of 393672885 is about 732.9007525687.

The spelling of 393672885 in words is "three hundred ninety-three million, six hundred seventy-two thousand, eight hundred eighty-five".