1308864039 has 24 divisors (see below), whose sum is σ = 2136925440. Its totient is φ = 708556464.

The previous prime is 1308864019. The next prime is 1308864041. The reversal of 1308864039 is 9304688031.

It is a happy number.

It is not a de Polignac number, because 1308864039 - 2¹¹ = 1308861991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1308864019) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 231519 + ... + 237104.

It is an arithmetic number, because the mean of its divisors is an integer number (89038560).

Almost surely, 2^1308864039 is an apocalyptic number.

1308864039 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1308864039 is a deficient number, since it is larger than the sum of its proper divisors (828061401).

1308864039 is a wasteful number, since it uses less digits than its factorization.

1308864039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468659 (or 468652 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 1308864039 is about 36178.2260344534. The cubic root of 1308864039 is about 1093.8678174950.

The spelling of 1308864039 in words is "one billion, three hundred eight million, eight hundred sixty-four thousand, thirty-nine".