274640449 has 2 divisors, whose sum is σ = 274640450. Its totient is φ = 274640448.

The previous prime is 274640407. The next prime is 274640473. The reversal of 274640449 is 944046472.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 193766400 + 80874049 = 13920^2 + 8993^2 .

It is a cyclic number.

It is not a de Polignac number, because 274640449 - 2¹¹ = 274638401 is a prime.

It is not a weakly prime, because it can be changed into another prime (274640479) 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, 137320224 + 137320225.

It is an arithmetic number, because the mean of its divisors is an integer number (137320225).

Almost surely, 2^274640449 is an apocalyptic number.

It is an amenable number.

274640449 is a deficient number, since it is larger than the sum of its proper divisors (1).

274640449 is an equidigital number, since it uses as much as digits as its factorization.

274640449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 193536, while the sum is 40.

The square root of 274640449 is about 16572.2795354170. The cubic root of 274640449 is about 650.0121883316.

The spelling of 274640449 in words is "two hundred seventy-four million, six hundred forty thousand, four hundred forty-nine".