1272993799 has 32 divisors (see below), whose sum is σ = 1613094912. Its totient is φ = 975840000.

The previous prime is 1272993793. The next prime is 1272993809. The reversal of 1272993799 is 9973992721.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1272993799 - 2¹⁷ = 1272862727 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1272993793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1484979 + ... + 1485835.

It is an arithmetic number, because the mean of its divisors is an integer number (50409216).

Almost surely, 2^1272993799 is an apocalyptic number.

1272993799 is a deficient number, since it is larger than the sum of its proper divisors (340101113).

1272993799 is a wasteful number, since it uses less digits than its factorization.

1272993799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1167.

The product of its digits is 3857868, while the sum is 58.

The square root of 1272993799 is about 35679.0386501654. The cubic root of 1272993799 is about 1083.7824049906.

The spelling of 1272993799 in words is "one billion, two hundred seventy-two million, nine hundred ninety-three thousand, seven hundred ninety-nine".