45893991 has 16 divisors (see below), whose sum is σ = 71890560. Its totient is φ = 25674720.

The previous prime is 45893983. The next prime is 45894011. The reversal of 45893991 is 19939854.

It is not a de Polignac number, because 45893991 - 2³ = 45893983 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 45893991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45893971) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53061 + ... + 53918.

It is an arithmetic number, because the mean of its divisors is an integer number (4493160).

Almost surely, 2^45893991 is an apocalyptic number.

45893991 is a deficient number, since it is larger than the sum of its proper divisors (25996569).

45893991 is a wasteful number, since it uses less digits than its factorization.

45893991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107006.

The product of its digits is 349920, while the sum is 48.

The square root of 45893991 is about 6774.5103882126. The cubic root of 45893991 is about 358.0293324072.

It can be divided in two parts, 458 and 93991, that added together give a palindrome (94449).

The spelling of 45893991 in words is "forty-five million, eight hundred ninety-three thousand, nine hundred ninety-one".