1173045979 has 16 divisors (see below), whose sum is σ = 1384661952. Its totient is φ = 972960768.

The previous prime is 1173045949. The next prime is 1173045989. The reversal of 1173045979 is 9795403711.

It is a cyclic number.

It is not a de Polignac number, because 1173045979 - 2⁷ = 1173045851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1173045949) 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 15 ways as a sum of consecutive naturals, for example, 5427 + ... + 48739.

It is an arithmetic number, because the mean of its divisors is an integer number (86541372).

Almost surely, 2^1173045979 is an apocalyptic number.

1173045979 is a deficient number, since it is larger than the sum of its proper divisors (211615973).

1173045979 is an equidigital number, since it uses as much as digits as its factorization.

1173045979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43446.

The product of its (nonzero) digits is 238140, while the sum is 46.

The square root of 1173045979 is about 34249.7588166691. The cubic root of 1173045979 is about 1054.6418763060.

The spelling of 1173045979 in words is "one billion, one hundred seventy-three million, forty-five thousand, nine hundred seventy-nine".