629796979 has 4 divisors (see below), whose sum is σ = 719767984. Its totient is φ = 539825976.

The previous prime is 629796967. The next prime is 629796989. The reversal of 629796979 is 979697926.

629796979 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 629796979 - 2¹¹ = 629794931 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 629796979.

It is not an unprimeable number, because it can be changed into a prime (629796929) 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, 44985492 + ... + 44985505.

It is an arithmetic number, because the mean of its divisors is an integer number (179941996).

Almost surely, 2^629796979 is an apocalyptic number.

629796979 is a deficient number, since it is larger than the sum of its proper divisors (89971005).

629796979 is an equidigital number, since it uses as much as digits as its factorization.

629796979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89971004.

The product of its digits is 23147208, while the sum is 64.

The square root of 629796979 is about 25095.7561950223. The cubic root of 629796979 is about 857.1697925358.

The spelling of 629796979 in words is "six hundred twenty-nine million, seven hundred ninety-six thousand, nine hundred seventy-nine".