274989961 has 4 divisors (see below), whose sum is σ = 275439172. Its totient is φ = 274540752.

The previous prime is 274989959. The next prime is 274989971. The reversal of 274989961 is 169989472.

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 116229961 + 158760000 = 10781^2 + 12600^2 .

It is a cyclic number.

It is not a de Polignac number, because 274989961 - 2¹ = 274989959 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (274989971) 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, 223686 + ... + 224911.

It is an arithmetic number, because the mean of its divisors is an integer number (68859793).

Almost surely, 2^274989961 is an apocalyptic number.

It is an amenable number.

274989961 is a deficient number, since it is larger than the sum of its proper divisors (449211).

274989961 is an equidigital number, since it uses as much as digits as its factorization.

274989961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449210.

The product of its digits is 1959552, while the sum is 55.

The square root of 274989961 is about 16582.8212617757. The cubic root of 274989961 is about 650.2878102157.

The spelling of 274989961 in words is "two hundred seventy-four million, nine hundred eighty-nine thousand, nine hundred sixty-one".