45891689 has 4 divisors (see below), whose sum is σ = 45920400. Its totient is φ = 45862980.

The previous prime is 45891683. The next prime is 45891691. The reversal of 45891689 is 98619854.

It is a happy number.

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 a de Polignac number, because none of the positive numbers 2^k-45891689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45891683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11807 + ... + 15204.

It is an arithmetic number, because the mean of its divisors is an integer number (11480100).

Almost surely, 2^45891689 is an apocalyptic number.

It is an amenable number.

45891689 is a deficient number, since it is larger than the sum of its proper divisors (28711).

45891689 is a wasteful number, since it uses less digits than its factorization.

45891689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28710.

The product of its digits is 622080, while the sum is 50.

The square root of 45891689 is about 6774.3404845047. The cubic root of 45891689 is about 358.0233461674.

The spelling of 45891689 in words is "forty-five million, eight hundred ninety-one thousand, six hundred eighty-nine".