45399818 has 8 divisors (see below), whose sum is σ = 68267460. Its totient is φ = 22644000.

The previous prime is 45399793. The next prime is 45399857. The reversal of 45399818 is 81899354.

It can be written as a sum of positive squares in 2 ways, for example, as 37908649 + 7491169 = 6157^2 + 2737^2 .

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

It is a super-2 number, since 2×45399818² = 4122286948866248, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26933 + ... + 28568.

Almost surely, 2^45399818 is an apocalyptic number.

45399818 is a deficient number, since it is larger than the sum of its proper divisors (22867642).

45399818 is a wasteful number, since it uses less digits than its factorization.

45399818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55912.

The product of its digits is 311040, while the sum is 47.

The square root of 45399818 is about 6737.9387055686. The cubic root of 45399818 is about 356.7396407395.

The spelling of 45399818 in words is "forty-five million, three hundred ninety-nine thousand, eight hundred eighteen".