391464 has 24 divisors (see below), whose sum is σ = 1060410. Its totient is φ = 130464.

The previous prime is 391453. The next prime is 391487. The reversal of 391464 is 464193.

It can be written as a sum of positive squares in only one way, i.e., 324900 + 66564 = 570^2 + 258^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a nude number because it is divisible by every one of its digits.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 391464.

It is an unprimeable number.

391464 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2647 + ... + 2790.

2³⁹¹⁴⁶⁴ is an apocalyptic number.

It is an amenable number.

391464 is an abundant number, since it is smaller than the sum of its proper divisors (668946).

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

391464 is a wasteful number, since it uses less digits than its factorization.

391464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5449 (or 5442 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 391464 is about 625.6708399790. The cubic root of 391464 is about 73.1527420490.

The spelling of 391464 in words is "three hundred ninety-one thousand, four hundred sixty-four".