45405889 has 2 divisors, whose sum is σ = 45405890. Its totient is φ = 45405888.

The previous prime is 45405821. The next prime is 45405949. The reversal of 45405889 is 98850454.

It is a happy number.

45405889 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41473600 + 3932289 = 6440^2 + 1983^2 .

It is a cyclic number.

It is not a de Polignac number, because 45405889 - 2²¹ = 43308737 is a prime.

It is not a weakly prime, because it can be changed into another prime (45405389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22702944 + 22702945.

It is an arithmetic number, because the mean of its divisors is an integer number (22702945).

Almost surely, 2^45405889 is an apocalyptic number.

It is an amenable number.

45405889 is a deficient number, since it is larger than the sum of its proper divisors (1).

45405889 is an equidigital number, since it uses as much as digits as its factorization.

45405889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 230400, while the sum is 43.

The square root of 45405889 is about 6738.3891992078. The cubic root of 45405889 is about 356.7555414628.

The spelling of 45405889 in words is "forty-five million, four hundred five thousand, eight hundred eighty-nine".