45991898 has 8 divisors (see below), whose sum is σ = 69933108. Its totient is φ = 22680864.

The previous prime is 45991889. The next prime is 45991921. The reversal of 45991898 is 89819954.

It can be written as a sum of positive squares in 2 ways, for example, as 44662489 + 1329409 = 6683^2 + 1153^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 157361 + ... + 157652.

Almost surely, 2^45991898 is an apocalyptic number.

45991898 is a deficient number, since it is larger than the sum of its proper divisors (23941210).

45991898 is a wasteful number, since it uses less digits than its factorization.

45991898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315088.

The product of its digits is 933120, while the sum is 53.

The square root of 45991898 is about 6781.7326694584. The cubic root of 45991898 is about 358.2837497405.

The spelling of 45991898 in words is "forty-five million, nine hundred ninety-one thousand, eight hundred ninety-eight".