274489809 has 16 divisors (see below), whose sum is σ = 406793664. Its totient is φ = 163217600.

The previous prime is 274489807. The next prime is 274489829. The reversal of 274489809 is 908984472.

It is a cyclic number.

It is not a de Polignac number, because 274489809 - 2¹ = 274489807 is a prime.

It is not an unprimeable number, because it can be changed into a prime (274489801) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76722 + ... + 80219.

It is an arithmetic number, because the mean of its divisors is an integer number (25424604).

Almost surely, 2^274489809 is an apocalyptic number.

It is an amenable number.

274489809 is a deficient number, since it is larger than the sum of its proper divisors (132303855).

274489809 is a wasteful number, since it uses less digits than its factorization.

274489809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157008.

The product of its (nonzero) digits is 1161216, while the sum is 51.

The square root of 274489809 is about 16567.7339729970. The cubic root of 274489809 is about 649.8933229272.

The spelling of 274489809 in words is "two hundred seventy-four million, four hundred eighty-nine thousand, eight hundred nine".