393240513 has 8 divisors (see below), whose sum is σ = 525052800. Its totient is φ = 261794288.

The previous prime is 393240479. The next prime is 393240539. The reversal of 393240513 is 315042393.

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 393240513 - 2²⁵ = 359686081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (393240593) 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, 88998 + ... + 93311.

It is an arithmetic number, because the mean of its divisors is an integer number (65631600).

Almost surely, 2^393240513 is an apocalyptic number.

It is an amenable number.

393240513 is a deficient number, since it is larger than the sum of its proper divisors (131812287).

393240513 is a wasteful number, since it uses less digits than its factorization.

393240513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183031.

The product of its (nonzero) digits is 9720, while the sum is 30.

The square root of 393240513 is about 19830.2928117565. The cubic root of 393240513 is about 732.6323386484.

The spelling of 393240513 in words is "three hundred ninety-three million, two hundred forty thousand, five hundred thirteen".