493872979 has 2 divisors, whose sum is σ = 493872980. Its totient is φ = 493872978.

The previous prime is 493872943. The next prime is 493873007. The reversal of 493872979 is 979278394.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 493872979 - 2²¹ = 491775827 is a prime.

It is not a weakly prime, because it can be changed into another prime (493872919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 246936489 + 246936490.

It is an arithmetic number, because the mean of its divisors is an integer number (246936490).

Almost surely, 2^493872979 is an apocalyptic number.

493872979 is a deficient number, since it is larger than the sum of its proper divisors (1).

493872979 is an equidigital number, since it uses as much as digits as its factorization.

493872979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6858432, while the sum is 58.

The square root of 493872979 is about 22223.2531146995. The cubic root of 493872979 is about 790.4451793058.

The spelling of 493872979 in words is "four hundred ninety-three million, eight hundred seventy-two thousand, nine hundred seventy-nine".