1304945979 has 16 divisors (see below), whose sum is σ = 1752088320. Its totient is φ = 863898080.

The previous prime is 1304945969. The next prime is 1304946017. The reversal of 1304945979 is 9795494031.

It is a cyclic number.

It is not a de Polignac number, because 1304945979 - 2⁸ = 1304945723 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1304945969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 552469 + ... + 554825.

It is an arithmetic number, because the mean of its divisors is an integer number (109505520).

Almost surely, 2^1304945979 is an apocalyptic number.

1304945979 is a deficient number, since it is larger than the sum of its proper divisors (447142341).

1304945979 is a wasteful number, since it uses less digits than its factorization.

1304945979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3570.

The product of its (nonzero) digits is 1224720, while the sum is 51.

The square root of 1304945979 is about 36124.0360286610. The cubic root of 1304945979 is about 1092.7752356158.

The spelling of 1304945979 in words is "one billion, three hundred four million, nine hundred forty-five thousand, nine hundred seventy-nine".