274028989 has 4 divisors (see below), whose sum is σ = 295108156. Its totient is φ = 252949824.

The previous prime is 274028983. The next prime is 274029013. The reversal of 274028989 is 989820472.

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

It can be written as a sum of positive squares in 2 ways, for example, as 50765625 + 223263364 = 7125^2 + 14942^2 .

It is a cyclic number.

It is not a de Polignac number, because 274028989 - 2⁹ = 274028477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (274028983) 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, 10539564 + ... + 10539589.

It is an arithmetic number, because the mean of its divisors is an integer number (73777039).

Almost surely, 2^274028989 is an apocalyptic number.

It is an amenable number.

274028989 is a deficient number, since it is larger than the sum of its proper divisors (21079167).

274028989 is a wasteful number, since it uses less digits than its factorization.

274028989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21079166.

The product of its (nonzero) digits is 580608, while the sum is 49.

The square root of 274028989 is about 16553.8209788556. The cubic root of 274028989 is about 649.5294337757.

The spelling of 274028989 in words is "two hundred seventy-four million, twenty-eight thousand, nine hundred eighty-nine".