45470809 has 4 divisors (see below), whose sum is σ = 45484416. Its totient is φ = 45457204.

The previous prime is 45470807. The next prime is 45470813. The reversal of 45470809 is 90807454.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 45470809 - 2¹ = 45470807 is a prime.

It is a super-2 number, since 2×45470809² = 4135188942228962, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45470807) 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, 2052 + ... + 9754.

It is an arithmetic number, because the mean of its divisors is an integer number (11371104).

Almost surely, 2^45470809 is an apocalyptic number.

It is an amenable number.

45470809 is a deficient number, since it is larger than the sum of its proper divisors (13607).

45470809 is an equidigital number, since it uses as much as digits as its factorization.

45470809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13606.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 45470809 is about 6743.2046535753. The cubic root of 45470809 is about 356.9254866756.

The spelling of 45470809 in words is "forty-five million, four hundred seventy thousand, eight hundred nine".