1309254039 has 12 divisors (see below), whose sum is σ = 1956357000. Its totient is φ = 842738064.

The previous prime is 1309254019. The next prime is 1309254059. The reversal of 1309254039 is 9304529031.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1309254019) and next prime (1309254059).

It is not a de Polignac number, because 1309254039 - 2²⁰ = 1308205463 is a prime.

It is a super-2 number, since 2×1309254039² = 3428292277275627042, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1309253994 and 1309254012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1309254019) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2507889 + ... + 2508410.

It is an arithmetic number, because the mean of its divisors is an integer number (163029750).

Almost surely, 2^1309254039 is an apocalyptic number.

1309254039 is a deficient number, since it is larger than the sum of its proper divisors (647102961).

1309254039 is a wasteful number, since it uses less digits than its factorization.

1309254039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5016334 (or 5016331 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 36.

The square root of 1309254039 is about 36183.6156153583. The cubic root of 1309254039 is about 1093.9764526859.

The spelling of 1309254039 in words is "one billion, three hundred nine million, two hundred fifty-four thousand, thirty-nine".