4509431 has 4 divisors (see below), whose sum is σ = 4514952. Its totient is φ = 4503912.

The previous prime is 4509419. The next prime is 4509451. The reversal of 4509431 is 1349054.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4509431 - 2²² = 315127 is a prime.

It is a super-2 number, since 2×4509431² = 40669935887522, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 4509431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4509451) 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, 1265 + ... + 3258.

It is an arithmetic number, because the mean of its divisors is an integer number (1128738).

Almost surely, 2^4509431 is an apocalyptic number.

4509431 is a deficient number, since it is larger than the sum of its proper divisors (5521).

4509431 is an equidigital number, since it uses as much as digits as its factorization.

4509431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5520.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 4509431 is about 2123.5420881160. The cubic root of 4509431 is about 165.2116170620.

The spelling of 4509431 in words is "four million, five hundred nine thousand, four hundred thirty-one".