464532509 has 4 divisors (see below), whose sum is σ = 530894304. Its totient is φ = 398170716.

The previous prime is 464532499. The next prime is 464532511. The reversal of 464532509 is 905235464.

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 a de Polignac number, because none of the positive numbers 2^k-464532509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (464532529) 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, 33180887 + ... + 33180900.

It is an arithmetic number, because the mean of its divisors is an integer number (132723576).

Almost surely, 2^464532509 is an apocalyptic number.

It is an amenable number.

464532509 is a deficient number, since it is larger than the sum of its proper divisors (66361795).

464532509 is an equidigital number, since it uses as much as digits as its factorization.

464532509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66361794.

The product of its (nonzero) digits is 129600, while the sum is 38.

The square root of 464532509 is about 21553.0162390325. The cubic root of 464532509 is about 774.4713753398.

The spelling of 464532509 in words is "four hundred sixty-four million, five hundred thirty-two thousand, five hundred nine".