464387809 has 4 divisors (see below), whose sum is σ = 465446080. Its totient is φ = 463329540.

The previous prime is 464387801. The next prime is 464387857. The reversal of 464387809 is 908783464.

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 464387809 - 2³ = 464387801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (464387801) 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, 528477 + ... + 529354.

It is an arithmetic number, because the mean of its divisors is an integer number (116361520).

Almost surely, 2^464387809 is an apocalyptic number.

It is an amenable number.

464387809 is a deficient number, since it is larger than the sum of its proper divisors (1058271).

464387809 is a wasteful number, since it uses less digits than its factorization.

464387809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1058270.

The product of its (nonzero) digits is 1161216, while the sum is 49.

The square root of 464387809 is about 21549.6591388356. The cubic root of 464387809 is about 774.3909520871.

The spelling of 464387809 in words is "four hundred sixty-four million, three hundred eighty-seven thousand, eight hundred nine".