1329979724 has 12 divisors (see below), whose sum is σ = 2336739048. Its totient is φ = 662340000.

The previous prime is 1329979709. The next prime is 1329979747. The reversal of 1329979724 is 4279799231.

It is a super-2 number, since 2×1329979724² = 3537692132502232352, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 661337 + ... + 663344.

It is an arithmetic number, because the mean of its divisors is an integer number (194728254).

Almost surely, 2^1329979724 is an apocalyptic number.

It is an amenable number.

1329979724 is a deficient number, since it is larger than the sum of its proper divisors (1006759324).

1329979724 is a wasteful number, since it uses less digits than its factorization.

1329979724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1324936 (or 1324934 counting only the distinct ones).

The product of its digits is 1714608, while the sum is 53.

The square root of 1329979724 is about 36468.8870682943. The cubic root of 1329979724 is about 1099.7188603835.

The spelling of 1329979724 in words is "one billion, three hundred twenty-nine million, nine hundred seventy-nine thousand, seven hundred twenty-four".