393440102215 has 16 divisors (see below), whose sum is σ = 481066280928. Its totient is φ = 308794052736.

The previous prime is 393440102203. The next prime is 393440102227. The reversal of 393440102215 is 512201044393.

It is an interprime number because it is at equal distance from previous prime (393440102203) and next prime (393440102227).

It is a cyclic number.

It is not a de Polignac number, because 393440102215 - 2²³ = 393431713607 is a prime.

It is a super-2 number, since 2×393440102215² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5405092 + ... + 5477398.

It is an arithmetic number, because the mean of its divisors is an integer number (30066642558).

Almost surely, 2^393440102215 is an apocalyptic number.

393440102215 is a deficient number, since it is larger than the sum of its proper divisors (87626178713).

393440102215 is a wasteful number, since it uses less digits than its factorization.

393440102215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92898.

The product of its (nonzero) digits is 25920, while the sum is 34.

The spelling of 393440102215 in words is "three hundred ninety-three billion, four hundred forty million, one hundred two thousand, two hundred fifteen".