979670905 has 4 divisors (see below), whose sum is σ = 1175605092. Its totient is φ = 783736720.

The previous prime is 979670903. The next prime is 979670929. The reversal of 979670905 is 509076979.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 509076979 = 109 ⋅4670431.

It can be written as a sum of positive squares in 2 ways, for example, as 135419769 + 844251136 = 11637^2 + 29056^2 .

It is not a de Polignac number, because 979670905 - 2¹ = 979670903 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (979670903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97967086 + ... + 97967095.

It is an arithmetic number, because the mean of its divisors is an integer number (293901273).

Almost surely, 2^979670905 is an apocalyptic number.

It is an amenable number.

979670905 is a deficient number, since it is larger than the sum of its proper divisors (195934187).

979670905 is a wasteful number, since it uses less digits than its factorization.

979670905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195934186.

The product of its (nonzero) digits is 1071630, while the sum is 52.

The square root of 979670905 is about 31299.6949665648. The cubic root of 979670905 is about 993.1771901345.

The spelling of 979670905 in words is "nine hundred seventy-nine million, six hundred seventy thousand, nine hundred five".