974555905 has 4 divisors (see below), whose sum is σ = 1169467092. Its totient is φ = 779644720.

The previous prime is 974555899. The next prime is 974555909. The reversal of 974555905 is 509555479.

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 505530256 + 469025649 = 22484^2 + 21657^2 .

It is not a de Polignac number, because 974555905 - 2¹⁷ = 974424833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (974555909) 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, 97455586 + ... + 97455595.

It is an arithmetic number, because the mean of its divisors is an integer number (292366773).

Almost surely, 2^974555905 is an apocalyptic number.

It is an amenable number.

974555905 is a deficient number, since it is larger than the sum of its proper divisors (194911187).

974555905 is a wasteful number, since it uses less digits than its factorization.

974555905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194911186.

The product of its (nonzero) digits is 1417500, while the sum is 49.

The square root of 974555905 is about 31217.8779708038. The cubic root of 974555905 is about 991.4456670468.

The spelling of 974555905 in words is "nine hundred seventy-four million, five hundred fifty-five thousand, nine hundred five".