309464 has 16 divisors (see below), whose sum is σ = 587520. Its totient is φ = 152800.

The previous prime is 309461. The next prime is 309469. The reversal of 309464 is 464903.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 309464.

It is not an unprimeable number, because it can be changed into a prime (309461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 617 + ... + 999.

It is an arithmetic number, because the mean of its divisors is an integer number (36720).

2³⁰⁹⁴⁶⁴ is an apocalyptic number.

It is an amenable number.

309464 is a deficient number, since it is larger than the sum of its proper divisors (278056).

309464 is a wasteful number, since it uses less digits than its factorization.

309464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490 (or 486 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 309464 is about 556.2948858294. The cubic root of 309464 is about 67.6399656301.

The spelling of 309464 in words is "three hundred nine thousand, four hundred sixty-four".