394421311 has 4 divisors (see below), whose sum is σ = 394632000. Its totient is φ = 394210624.

The previous prime is 394421281. The next prime is 394421317. The reversal of 394421311 is 113124493.

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 394421311 - 2⁹ = 394420799 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 394421311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394421317) 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, 102511 + ... + 106288.

It is an arithmetic number, because the mean of its divisors is an integer number (98658000).

Almost surely, 2^394421311 is an apocalyptic number.

394421311 is a deficient number, since it is larger than the sum of its proper divisors (210689).

394421311 is a wasteful number, since it uses less digits than its factorization.

394421311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210688.

The product of its digits is 2592, while the sum is 28.

The square root of 394421311 is about 19860.0430764890. The cubic root of 394421311 is about 733.3649067444.

The spelling of 394421311 in words is "three hundred ninety-four million, four hundred twenty-one thousand, three hundred eleven".