491433 has 4 divisors (see below), whose sum is σ = 655248. Its totient is φ = 327620.

The previous prime is 491429. The next prime is 491461. The reversal of 491433 is 334194.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 491433 - 2² = 491429 is a prime.

It is a D-number.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 491433.

It is not an unprimeable number, because it can be changed into a prime (491423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81903 + ... + 81908.

It is an arithmetic number, because the mean of its divisors is an integer number (163812).

2⁴⁹¹⁴³³ is an apocalyptic number.

It is an amenable number.

491433 is a deficient number, since it is larger than the sum of its proper divisors (163815).

491433 is a wasteful number, since it uses less digits than its factorization.

491433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163814.

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

The square root of 491433 is about 701.0228241648. The cubic root of 491433 is about 78.9141298440.

The spelling of 491433 in words is "four hundred ninety-one thousand, four hundred thirty-three".