45688889 has 2 divisors, whose sum is σ = 45688890. Its totient is φ = 45688888.

The previous prime is 45688849. The next prime is 45688897. The reversal of 45688889 is 98888654.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36808489 + 8880400 = 6067^2 + 2980^2 .

It is a cyclic number.

It is not a de Polignac number, because 45688889 - 2²⁰ = 44640313 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a plaindrome in base 10.

It is not a weakly prime, because it can be changed into another prime (45688849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22844444 + 22844445.

It is an arithmetic number, because the mean of its divisors is an integer number (22844445).

Almost surely, 2^45688889 is an apocalyptic number.

It is an amenable number.

45688889 is a deficient number, since it is larger than the sum of its proper divisors (1).

45688889 is an equidigital number, since it uses as much as digits as its factorization.

45688889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4423680, while the sum is 56.

The square root of 45688889 is about 6759.3556645586. The cubic root of 45688889 is about 357.4951869859.

The spelling of 45688889 in words is "forty-five million, six hundred eighty-eight thousand, eight hundred eighty-nine".