45989993 has 4 divisors (see below), whose sum is σ = 52560000. Its totient is φ = 39419988.

The previous prime is 45989989. The next prime is 45990023. The reversal of 45989993 is 39998954.

45989993 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, 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 45989993 - 2² = 45989989 is a prime.

It is a super-2 number, since 2×45989993² = 4230158912280098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45989953) 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, 3284993 + ... + 3285006.

It is an arithmetic number, because the mean of its divisors is an integer number (13140000).

Almost surely, 2^45989993 is an apocalyptic number.

It is an amenable number.

45989993 is a deficient number, since it is larger than the sum of its proper divisors (6570007).

45989993 is an equidigital number, since it uses as much as digits as its factorization.

45989993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6570006.

The product of its digits is 3149280, while the sum is 56.

The square root of 45989993 is about 6781.5922171714. The cubic root of 45989993 is about 358.2788029274.

The spelling of 45989993 in words is "forty-five million, nine hundred eighty-nine thousand, nine hundred ninety-three".