1979959474 has 4 divisors (see below), whose sum is σ = 2969939214. Its totient is φ = 989979736.

The previous prime is 1979959447. The next prime is 1979959489. The reversal of 1979959474 is 4749599791.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4749599791 = 17 ⋅279388223.

It can be written as a sum of positive squares in only one way, i.e., 1979805025 + 154449 = 44495^2 + 393^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494989867 + ... + 494989870.

Almost surely, 2^1979959474 is an apocalyptic number.

1979959474 is a deficient number, since it is larger than the sum of its proper divisors (989979740).

1979959474 is an equidigital number, since it uses as much as digits as its factorization.

1979959474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 989979739.

The product of its digits is 25719120, while the sum is 64.

The square root of 1979959474 is about 44496.7355431834. The cubic root of 1979959474 is about 1255.6986684488.

The spelling of 1979959474 in words is "one billion, nine hundred seventy-nine million, nine hundred fifty-nine thousand, four hundred seventy-four".