16453889 has 2 divisors, whose sum is σ = 16453890. Its totient is φ = 16453888.

The previous prime is 16453873. The next prime is 16453939. The reversal of 16453889 is 98835461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15054400 + 1399489 = 3880^2 + 1183^2 .

It is a cyclic number.

It is not a de Polignac number, because 16453889 - 2⁴ = 16453873 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (16453849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8226944 + 8226945.

It is an arithmetic number, because the mean of its divisors is an integer number (8226945).

Almost surely, 2^16453889 is an apocalyptic number.

It is an amenable number.

16453889 is a deficient number, since it is larger than the sum of its proper divisors (1).

16453889 is an equidigital number, since it uses as much as digits as its factorization.

16453889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 207360, while the sum is 44.

The square root of 16453889 is about 4056.3393595704. The cubic root of 16453889 is about 254.3447949333.

The spelling of 16453889 in words is "sixteen million, four hundred fifty-three thousand, eight hundred eighty-nine".