45845409 has 4 divisors (see below), whose sum is σ = 61127216. Its totient is φ = 30563604.

The previous prime is 45845407. The next prime is 45845411. The reversal of 45845409 is 90454854.

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 an interprime number because it is at equal distance from previous prime (45845407) and next prime (45845411).

It is not a de Polignac number, because 45845409 - 2¹ = 45845407 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45845407) 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, 7640899 + ... + 7640904.

It is an arithmetic number, because the mean of its divisors is an integer number (15281804).

Almost surely, 2^45845409 is an apocalyptic number.

It is an amenable number.

45845409 is a deficient number, since it is larger than the sum of its proper divisors (15281807).

45845409 is a wasteful number, since it uses less digits than its factorization.

45845409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15281806.

The product of its (nonzero) digits is 115200, while the sum is 39.

The square root of 45845409 is about 6770.9237922162. The cubic root of 45845409 is about 357.9029547721.

The spelling of 45845409 in words is "forty-five million, eight hundred forty-five thousand, four hundred nine".