754821979 has 2 divisors, whose sum is σ = 754821980. Its totient is φ = 754821978.

The previous prime is 754821943. The next prime is 754822031. The reversal of 754821979 is 979128457.

It is an a-pointer prime, because the next prime (754822031) can be obtained adding 754821979 to its sum of digits (52).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 754821979 - 2⁹ = 754821467 is a prime.

It is not a weakly prime, because it can be changed into another prime (754821479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 377410989 + 377410990.

It is an arithmetic number, because the mean of its divisors is an integer number (377410990).

Almost surely, 2^754821979 is an apocalyptic number.

754821979 is a deficient number, since it is larger than the sum of its proper divisors (1).

754821979 is an equidigital number, since it uses as much as digits as its factorization.

754821979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1270080, while the sum is 52.

The square root of 754821979 is about 27474.0237133187. The cubic root of 754821979 is about 910.5032755307.

The spelling of 754821979 in words is "seven hundred fifty-four million, eight hundred twenty-one thousand, nine hundred seventy-nine".