461391 has 16 divisors (see below), whose sum is σ = 712704. Its totient is φ = 260064.

The previous prime is 461381. The next prime is 461393. The reversal of 461391 is 193164.

It is not a de Polignac number, because 461391 - 2⁵ = 461359 is a prime.

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 461391.

It is not an unprimeable number, because it can be changed into a prime (461393) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2581 + ... + 2753.

It is an arithmetic number, because the mean of its divisors is an integer number (44544).

2⁴⁶¹³⁹¹ is an apocalyptic number.

461391 is a deficient number, since it is larger than the sum of its proper divisors (251313).

461391 is a wasteful number, since it uses less digits than its factorization.

461391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310.

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

The square root of 461391 is about 679.2576830629. The cubic root of 461391 is about 77.2721577393.

The spelling of 461391 in words is "four hundred sixty-one thousand, three hundred ninety-one".