622979431 has 4 divisors (see below), whose sum is σ = 623086864. Its totient is φ = 622872000.

The previous prime is 622979419. The next prime is 622979447. The reversal of 622979431 is 134979226.

622979431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 622979431 - 2⁷ = 622979303 is a prime.

It is a super-2 number, since 2×622979431² = 776206742898167522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (622979411) 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, 44490 + ... + 56791.

It is an arithmetic number, because the mean of its divisors is an integer number (155771716).

Almost surely, 2^622979431 is an apocalyptic number.

622979431 is a deficient number, since it is larger than the sum of its proper divisors (107433).

622979431 is a wasteful number, since it uses less digits than its factorization.

622979431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107432.

The product of its digits is 163296, while the sum is 43.

The square root of 622979431 is about 24959.5559055044. Note that the first 3 decimals coincide. The cubic root of 622979431 is about 854.0656121491.

The spelling of 622979431 in words is "six hundred twenty-two million, nine hundred seventy-nine thousand, four hundred thirty-one".