393413661 has 12 divisors (see below), whose sum is σ = 568440288. Its totient is φ = 262194504.

The previous prime is 393413659. The next prime is 393413663. The reversal of 393413661 is 166314393.

It is an interprime number because it is at equal distance from previous prime (393413659) and next prime (393413663).

It is not a de Polignac number, because 393413661 - 2¹ = 393413659 is a prime.

It is a super-2 number, since 2×393413661² = 309548617322845842, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (393413663) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43606 + ... + 51848.

It is an arithmetic number, because the mean of its divisors is an integer number (47370024).

Almost surely, 2^393413661 is an apocalyptic number.

It is an amenable number.

393413661 is a deficient number, since it is larger than the sum of its proper divisors (175026627).

393413661 is a wasteful number, since it uses less digits than its factorization.

393413661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13552 (or 13549 counting only the distinct ones).

The product of its digits is 34992, while the sum is 36.

The square root of 393413661 is about 19834.6580762059. The cubic root of 393413661 is about 732.7398514861.

The spelling of 393413661 in words is "three hundred ninety-three million, four hundred thirteen thousand, six hundred sixty-one".