391461 has 12 divisors (see below), whose sum is σ = 607392. Its totient is φ = 223608.

The previous prime is 391453. The next prime is 391487. The reversal of 391461 is 164193.

It is not a de Polignac number, because 391461 - 2³ = 391453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (391441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1185 + ... + 1478.

It is an arithmetic number, because the mean of its divisors is an integer number (50616).

2³⁹¹⁴⁶¹ is an apocalyptic number.

It is an amenable number.

391461 is a deficient number, since it is larger than the sum of its proper divisors (215931).

391461 is a wasteful number, since it uses less digits than its factorization.

391461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2680 (or 2673 counting only the distinct ones).

The product of its digits is 648, while the sum is 24.

The square root of 391461 is about 625.6684425476. The cubic root of 391461 is about 73.1525551789.

The spelling of 391461 in words is "three hundred ninety-one thousand, four hundred sixty-one".