45644993 has 4 divisors (see below), whose sum is σ = 45744468. Its totient is φ = 45545520.

The previous prime is 45644981. The next prime is 45645001. The reversal of 45644993 is 39944654.

It is a happy number.

45644993 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4068289 + 41576704 = 2017^2 + 6448^2 .

It is a cyclic number.

It is not a de Polignac number, because 45644993 - 2⁸ = 45644737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45644923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49046 + ... + 49967.

It is an arithmetic number, because the mean of its divisors is an integer number (11436117).

Almost surely, 2^45644993 is an apocalyptic number.

It is an amenable number.

45644993 is a deficient number, since it is larger than the sum of its proper divisors (99475).

45644993 is an equidigital number, since it uses as much as digits as its factorization.

45644993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99474.

The product of its digits is 466560, while the sum is 44.

The square root of 45644993 is about 6756.1078292165. The cubic root of 45644993 is about 357.3806614243.

The spelling of 45644993 in words is "forty-five million, six hundred forty-four thousand, nine hundred ninety-three".