391434 has 8 divisors (see below), whose sum is σ = 782880. Its totient is φ = 130476.

The previous prime is 391403. The next prime is 391441. The reversal of 391434 is 434193.

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

391434 is an admirable number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 391434.

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, 32614 + ... + 32625.

It is an arithmetic number, because the mean of its divisors is an integer number (97860).

2³⁹¹⁴³⁴ is an apocalyptic number.

391434 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

391434 is a wasteful number, since it uses less digits than its factorization.

391434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65244.

The product of its digits is 1296, while the sum is 24.

The square root of 391434 is about 625.6468652523. The cubic root of 391434 is about 73.1508733047.

The spelling of 391434 in words is "three hundred ninety-one thousand, four hundred thirty-four".