394022399 has 4 divisors (see below), whose sum is σ = 414760440. Its totient is φ = 373284360.

The previous prime is 394022393. The next prime is 394022467. The reversal of 394022399 is 993220493.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 394022399 - 2²⁸ = 125586943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394022393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10368992 + ... + 10369029.

It is an arithmetic number, because the mean of its divisors is an integer number (103690110).

Almost surely, 2^394022399 is an apocalyptic number.

394022399 is a deficient number, since it is larger than the sum of its proper divisors (20738041).

394022399 is a wasteful number, since it uses less digits than its factorization.

394022399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20738040.

The product of its (nonzero) digits is 104976, while the sum is 41.

The square root of 394022399 is about 19849.9974559192. The cubic root of 394022399 is about 733.1175851323.

The spelling of 394022399 in words is "three hundred ninety-four million, twenty-two thousand, three hundred ninety-nine".