274890239 has 4 divisors (see below), whose sum is σ = 296035656. Its totient is φ = 253744824.

The previous prime is 274890229. The next prime is 274890251. The reversal of 274890239 is 932098472.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 274890239 - 2⁴ = 274890223 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 274890239.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (274890229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10572689 + ... + 10572714.

It is an arithmetic number, because the mean of its divisors is an integer number (74008914).

Almost surely, 2^274890239 is an apocalyptic number.

274890239 is a deficient number, since it is larger than the sum of its proper divisors (21145417).

274890239 is a wasteful number, since it uses less digits than its factorization.

274890239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21145416.

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 274890239 is about 16579.8142028190. The cubic root of 274890239 is about 650.2091942048.

The spelling of 274890239 in words is "two hundred seventy-four million, eight hundred ninety thousand, two hundred thirty-nine".