1012987799 has 8 divisors (see below), whose sum is σ = 1024456992. Its totient is φ = 1001550240.

The previous prime is 1012987783. The next prime is 1012987819. The reversal of 1012987799 is 9977892101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1012987799 - 2⁴ = 1012987783 is a prime.

It is a super-3 number, since 3×1012987799³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1012987799.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012987769) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59729 + ... + 74789.

It is an arithmetic number, because the mean of its divisors is an integer number (128057124).

Almost surely, 2^1012987799 is an apocalyptic number.

1012987799 is a deficient number, since it is larger than the sum of its proper divisors (11469193).

1012987799 is a wasteful number, since it uses less digits than its factorization.

1012987799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15817.

The product of its (nonzero) digits is 571536, while the sum is 53.

The square root of 1012987799 is about 31827.4692522041. The cubic root of 1012987799 is about 1004.3106578622.

The spelling of 1012987799 in words is "one billion, twelve million, nine hundred eighty-seven thousand, seven hundred ninety-nine".