45663889 has 2 divisors, whose sum is σ = 45663890. Its totient is φ = 45663888.

The previous prime is 45663851. The next prime is 45663911. The reversal of 45663889 is 98836654.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41731600 + 3932289 = 6460^2 + 1983^2 .

It is a cyclic number.

It is not a de Polignac number, because 45663889 - 2¹¹ = 45661841 is a prime.

It is not a weakly prime, because it can be changed into another prime (45663829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22831944 + 22831945.

It is an arithmetic number, because the mean of its divisors is an integer number (22831945).

Almost surely, 2^45663889 is an apocalyptic number.

It is an amenable number.

45663889 is a deficient number, since it is larger than the sum of its proper divisors (1).

45663889 is an equidigital number, since it uses as much as digits as its factorization.

45663889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1244160, while the sum is 49.

The square root of 45663889 is about 6757.5061228237. The cubic root of 45663889 is about 357.4299704713.

The spelling of 45663889 in words is "forty-five million, six hundred sixty-three thousand, eight hundred eighty-nine".