393211013 has 8 divisors (see below), whose sum is σ = 441869568. Its totient is φ = 347182704.

The previous prime is 393211009. The next prime is 393211043. The reversal of 393211013 is 310112393.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 393211013 - 2² = 393211009 is a prime.

It is a super-2 number, since 2×393211013² = 309229801488972338, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 393211013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (393211043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 657245 + ... + 657842.

It is an arithmetic number, because the mean of its divisors is an integer number (55233696).

Almost surely, 2^393211013 is an apocalyptic number.

It is an amenable number.

393211013 is a deficient number, since it is larger than the sum of its proper divisors (48658555).

393211013 is a wasteful number, since it uses less digits than its factorization.

393211013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1315123.

The product of its (nonzero) digits is 486, while the sum is 23.

The square root of 393211013 is about 19829.5489862982. The cubic root of 393211013 is about 732.6140180585.

The spelling of 393211013 in words is "three hundred ninety-three million, two hundred eleven thousand, thirteen".