274302389 has 2 divisors, whose sum is σ = 274302390. Its totient is φ = 274302388.

The previous prime is 274302377. The next prime is 274302397. The reversal of 274302389 is 983203472.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 257859364 + 16443025 = 16058^2 + 4055^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-274302389 is a prime.

It is a super-2 number, since 2×274302389² = 150483601222214642, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (274302989) 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, 137151194 + 137151195.

It is an arithmetic number, because the mean of its divisors is an integer number (137151195).

Almost surely, 2^274302389 is an apocalyptic number.

It is an amenable number.

274302389 is a deficient number, since it is larger than the sum of its proper divisors (1).

274302389 is an equidigital number, since it uses as much as digits as its factorization.

274302389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 38.

The square root of 274302389 is about 16562.0768323299. The cubic root of 274302389 is about 649.7453748247.

The spelling of 274302389 in words is "two hundred seventy-four million, three hundred two thousand, three hundred eighty-nine".