274949989 has 2 divisors, whose sum is σ = 274949990. Its totient is φ = 274949988.

The previous prime is 274949947. The next prime is 274950017. The reversal of 274949989 is 989949472.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 257057089 + 17892900 = 16033^2 + 4230^2 .

It is a cyclic number.

It is not a de Polignac number, because 274949989 - 2²⁷ = 140732261 is a prime.

It is a super-2 number, since 2×274949989² = 151194992902200242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (274949929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137474994 + 137474995.

It is an arithmetic number, because the mean of its divisors is an integer number (137474995).

Almost surely, 2^274949989 is an apocalyptic number.

It is an amenable number.

274949989 is a deficient number, since it is larger than the sum of its proper divisors (1).

274949989 is an equidigital number, since it uses as much as digits as its factorization.

274949989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11757312, while the sum is 61.

The square root of 274949989 is about 16581.6159948299. The cubic root of 274949989 is about 650.2563005032.

The spelling of 274949989 in words is "two hundred seventy-four million, nine hundred forty-nine thousand, nine hundred eighty-nine".