1299459992 has 16 divisors (see below), whose sum is σ = 2452842000. Its totient is φ = 645368800.

The previous prime is 1299459977. The next prime is 1299460007. The reversal of 1299459992 is 2999549921.

It is an interprime number because it is at equal distance from previous prime (1299459977) and next prime (1299460007).

It is a congruent number.

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, 543884 + ... + 546267.

It is an arithmetic number, because the mean of its divisors is an integer number (153302625).

Almost surely, 2^1299459992 is an apocalyptic number.

It is an amenable number.

1299459992 is a deficient number, since it is larger than the sum of its proper divisors (1153382008).

1299459992 is a wasteful number, since it uses less digits than its factorization.

1299459992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1090306 (or 1090302 counting only the distinct ones).

The product of its digits is 4723920, while the sum is 59.

The square root of 1299459992 is about 36048.0234132192. The cubic root of 1299459992 is about 1091.2417439555.

The spelling of 1299459992 in words is "one billion, two hundred ninety-nine million, four hundred fifty-nine thousand, nine hundred ninety-two".