274909979 has 2 divisors, whose sum is σ = 274909980. Its totient is φ = 274909978.

The previous prime is 274909949. The next prime is 274909991. The reversal of 274909979 is 979909472.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-274909979 is a prime.

It is not a weakly prime, because it can be changed into another prime (274909949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137454989 + 137454990.

It is an arithmetic number, because the mean of its divisors is an integer number (137454990).

Almost surely, 2^274909979 is an apocalyptic number.

274909979 is a deficient number, since it is larger than the sum of its proper divisors (1).

274909979 is an equidigital number, since it uses as much as digits as its factorization.

274909979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2571912, while the sum is 56.

The square root of 274909979 is about 16580.4094943400. The cubic root of 274909979 is about 650.2247577770.

The spelling of 274909979 in words is "two hundred seventy-four million, nine hundred nine thousand, nine hundred seventy-nine".