573473309 has 4 divisors (see below), whose sum is σ = 591972480. Its totient is φ = 554974140.

The previous prime is 573473297. The next prime is 573473317. The reversal of 573473309 is 903374375.

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 573473309 - 2⁴ = 573473293 is a prime.

It is a super-4 number, since 4×573473309⁴ (a number of 36 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (573473389) 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, 9249539 + ... + 9249600.

It is an arithmetic number, because the mean of its divisors is an integer number (147993120).

Almost surely, 2^573473309 is an apocalyptic number.

It is an amenable number.

573473309 is a deficient number, since it is larger than the sum of its proper divisors (18499171).

573473309 is a wasteful number, since it uses less digits than its factorization.

573473309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18499170.

The product of its (nonzero) digits is 238140, while the sum is 41.

The square root of 573473309 is about 23947.3027499967. The cubic root of 573473309 is about 830.8151419953.

The spelling of 573473309 in words is "five hundred seventy-three million, four hundred seventy-three thousand, three hundred nine".