1299731059 has 6 divisors (see below), whose sum is σ = 1428630140. Its totient is φ = 1181573580.

The previous prime is 1299731053. The next prime is 1299731063. The reversal of 1299731059 is 9501379921.

It is not a de Polignac number, because 1299731059 - 2³ = 1299731051 is a prime.

It is a super-2 number, since 2×1299731059² = 3378601651458522962, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1299731051) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5370669 + ... + 5370910.

Almost surely, 2^1299731059 is an apocalyptic number.

1299731059 is a deficient number, since it is larger than the sum of its proper divisors (128899081).

1299731059 is a wasteful number, since it uses less digits than its factorization.

1299731059 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10741601 (or 10741590 counting only the distinct ones).

The product of its (nonzero) digits is 153090, while the sum is 46.

The square root of 1299731059 is about 36051.7830210934. The cubic root of 1299731059 is about 1091.3176162568.

The spelling of 1299731059 in words is "one billion, two hundred ninety-nine million, seven hundred thirty-one thousand, fifty-nine".