4644691979 has 2 divisors, whose sum is σ = 4644691980. Its totient is φ = 4644691978.

The previous prime is 4644691943. The next prime is 4644691981. The reversal of 4644691979 is 9791964464.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4644691979 - 2¹⁶ = 4644626443 is a prime.

Together with 4644691981, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (4644690979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2322345989 + 2322345990.

It is an arithmetic number, because the mean of its divisors is an integer number (2322345990).

Almost surely, 2^4644691979 is an apocalyptic number.

4644691979 is a deficient number, since it is larger than the sum of its proper divisors (1).

4644691979 is an equidigital number, since it uses as much as digits as its factorization.

4644691979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11757312, while the sum is 59.

The square root of 4644691979 is about 68151.9770733029. The cubic root of 4644691979 is about 1668.4721919319.

The spelling of 4644691979 in words is "four billion, six hundred forty-four million, six hundred ninety-one thousand, nine hundred seventy-nine".