309869484 has 12 divisors (see below), whose sum is σ = 723028824. Its totient is φ = 103289824.

The previous prime is 309869479. The next prime is 309869551. The reversal of 309869484 is 484968903.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×309869484² = 192038194228852512, which contains 22 as substring.

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, 12911217 + ... + 12911240.

It is an arithmetic number, because the mean of its divisors is an integer number (60252402).

Almost surely, 2^309869484 is an apocalyptic number.

It is an amenable number.

309869484 is an abundant number, since it is smaller than the sum of its proper divisors (413159340).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

309869484 is a wasteful number, since it uses less digits than its factorization.

309869484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25822464 (or 25822462 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 51.

The square root of 309869484 is about 17603.1100661218. The cubic root of 309869484 is about 676.6949513227.

It can be divided in two parts, 30986 and 9484, that added together give a triangular number (40470 = T₂₈₄).

The spelling of 309869484 in words is "three hundred nine million, eight hundred sixty-nine thousand, four hundred eighty-four".