623047979 has 2 divisors, whose sum is σ = 623047980. Its totient is φ = 623047978.

The previous prime is 623047969. The next prime is 623047993. The reversal of 623047979 is 979740326.

623047979 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 623047979 - 2⁴ = 623047963 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (623047949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311523989 + 311523990.

It is an arithmetic number, because the mean of its divisors is an integer number (311523990).

Almost surely, 2^623047979 is an apocalyptic number.

623047979 is a deficient number, since it is larger than the sum of its proper divisors (1).

623047979 is an equidigital number, since it uses as much as digits as its factorization.

623047979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 571536, while the sum is 47.

The square root of 623047979 is about 24960.9290492161. The cubic root of 623047979 is about 854.0969359990.

The spelling of 623047979 in words is "six hundred twenty-three million, forty-seven thousand, nine hundred seventy-nine".