45646409 has 8 divisors (see below), whose sum is σ = 47035080. Its totient is φ = 44277376.

The previous prime is 45646399. The next prime is 45646429. The reversal of 45646409 is 90464654.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 8094025 + 37552384 = 2845^2 + 6128^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45646409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45646429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122 + ... + 9555.

It is an arithmetic number, because the mean of its divisors is an integer number (5879385).

Almost surely, 2^45646409 is an apocalyptic number.

It is an amenable number.

45646409 is a deficient number, since it is larger than the sum of its proper divisors (1388671).

45646409 is an equidigital number, since it uses as much as digits as its factorization.

45646409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9819.

The product of its (nonzero) digits is 103680, while the sum is 38.

The square root of 45646409 is about 6756.2126224683. The cubic root of 45646409 is about 357.3843569431.

The spelling of 45646409 in words is "forty-five million, six hundred forty-six thousand, four hundred nine".