45890009 has 4 divisors (see below), whose sum is σ = 50061840. Its totient is φ = 41718180.

The previous prime is 45890003. The next prime is 45890011. The reversal of 45890009 is 90009854.

45890009 is nontrivially palindromic in base 13.

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 45890009 - 2⁴ = 45889993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45890003) 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, 2085899 + ... + 2085920.

It is an arithmetic number, because the mean of its divisors is an integer number (12515460).

Almost surely, 2^45890009 is an apocalyptic number.

It is an amenable number.

45890009 is a deficient number, since it is larger than the sum of its proper divisors (4171831).

45890009 is a wasteful number, since it uses less digits than its factorization.

45890009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4171830.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 45890009 is about 6774.2164860595. The cubic root of 45890009 is about 358.0189772822.

The spelling of 45890009 in words is "forty-five million, eight hundred ninety thousand, nine".