45147889 has 2 divisors, whose sum is σ = 45147890. Its totient is φ = 45147888.

The previous prime is 45147859. The next prime is 45147899. The reversal of 45147889 is 98874154.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36784225 + 8363664 = 6065^2 + 2892^2 .

It is a cyclic number.

It is not a de Polignac number, because 45147889 - 2⁷ = 45147761 is a prime.

It is not a weakly prime, because it can be changed into another prime (45147859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22573944 + 22573945.

It is an arithmetic number, because the mean of its divisors is an integer number (22573945).

Almost surely, 2^45147889 is an apocalyptic number.

It is an amenable number.

45147889 is a deficient number, since it is larger than the sum of its proper divisors (1).

45147889 is an equidigital number, since it uses as much as digits as its factorization.

45147889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 322560, while the sum is 46.

The square root of 45147889 is about 6719.2178860341. The cubic root of 45147889 is about 356.0785528168.

It can be divided in two parts, 4514 and 7889, that added together give a triangular number (12403 = T₁₅₇).

The spelling of 45147889 in words is "forty-five million, one hundred forty-seven thousand, eight hundred eighty-nine".