393340051 has 12 divisors (see below), whose sum is σ = 426742176. Its totient is φ = 360406800.

The previous prime is 393339979. The next prime is 393340061. The reversal of 393340051 is 150043393.

It is not a de Polignac number, because 393340051 - 2⁷ = 393339923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (393340061) 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, 295750 + ... + 297076.

It is an arithmetic number, because the mean of its divisors is an integer number (35561848).

Almost surely, 2^393340051 is an apocalyptic number.

393340051 is a deficient number, since it is larger than the sum of its proper divisors (33402125).

393340051 is a wasteful number, since it uses less digits than its factorization.

393340051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1642 (or 1491 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 28.

The square root of 393340051 is about 19832.8023990560. The cubic root of 393340051 is about 732.6941486631.

The spelling of 393340051 in words is "three hundred ninety-three million, three hundred forty thousand, fifty-one".