45391894 has 16 divisors (see below), whose sum is σ = 69189120. Its totient is φ = 22331880.

The previous prime is 45391891. The next prime is 45391901. The reversal of 45391894 is 49819354.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 45391894.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45391891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36259 + ... + 37489.

It is an arithmetic number, because the mean of its divisors is an integer number (4324320).

Almost surely, 2^45391894 is an apocalyptic number.

45391894 is a deficient number, since it is larger than the sum of its proper divisors (23797226).

45391894 is a wasteful number, since it uses less digits than its factorization.

45391894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1515.

The product of its digits is 155520, while the sum is 43.

The square root of 45391894 is about 6737.3506662486. The cubic root of 45391894 is about 356.7188846402.

The spelling of 45391894 in words is "forty-five million, three hundred ninety-one thousand, eight hundred ninety-four".