391479 has 8 divisors (see below), whose sum is σ = 569472. Its totient is φ = 237240.

The previous prime is 391453. The next prime is 391487. The reversal of 391479 is 974193.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 391479 - 2⁷ = 391351 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 11863 = 391479 / (3 + 9 + 1 + 4 + 7 + 9).

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 391479.

It is not an unprimeable number, because it can be changed into a prime (391379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5899 + ... + 5964.

It is an arithmetic number, because the mean of its divisors is an integer number (71184).

2³⁹¹⁴⁷⁹ is an apocalyptic number.

391479 is a deficient number, since it is larger than the sum of its proper divisors (177993).

391479 is a wasteful number, since it uses less digits than its factorization.

391479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11877.

The product of its digits is 6804, while the sum is 33.

The square root of 391479 is about 625.6828269978. The cubic root of 391479 is about 73.1536763853.

It can be divided in two parts, 3914 and 79, that added together give a palindrome (3993).

The spelling of 391479 in words is "three hundred ninety-one thousand, four hundred seventy-nine".