1309299459 has 16 divisors (see below), whose sum is σ = 1892003232. Its totient is φ = 800587008.

The previous prime is 1309299437. The next prime is 1309299479. The reversal of 1309299459 is 9549929031.

It is a happy number.

It is not a de Polignac number, because 1309299459 - 2⁷ = 1309299331 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1309299419) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100794 + ... + 113039.

It is an arithmetic number, because the mean of its divisors is an integer number (118250202).

Almost surely, 2^1309299459 is an apocalyptic number.

1309299459 is a deficient number, since it is larger than the sum of its proper divisors (582703773).

1309299459 is a wasteful number, since it uses less digits than its factorization.

1309299459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214006.

The product of its (nonzero) digits is 787320, while the sum is 51.

The square root of 1309299459 is about 36184.2432420522. The cubic root of 1309299459 is about 1093.9891031047.

The spelling of 1309299459 in words is "one billion, three hundred nine million, two hundred ninety-nine thousand, four hundred fifty-nine".