45006409 has 4 divisors (see below), whose sum is σ = 51435904. Its totient is φ = 38576916.

The previous prime is 45006407. The next prime is 45006433. The reversal of 45006409 is 90460054.

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 not a de Polignac number, because 45006409 - 2¹ = 45006407 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45006407) 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, 3214737 + ... + 3214750.

It is an arithmetic number, because the mean of its divisors is an integer number (12858976).

Almost surely, 2^45006409 is an apocalyptic number.

It is an amenable number.

45006409 is a deficient number, since it is larger than the sum of its proper divisors (6429495).

45006409 is an equidigital number, since it uses as much as digits as its factorization.

45006409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6429494.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 45006409 is about 6708.6816141474. The cubic root of 45006409 is about 355.7062156690.

The spelling of 45006409 in words is "forty-five million, six thousand, four hundred nine".