53899889 has 2 divisors, whose sum is σ = 53899890. Its totient is φ = 53899888.

The previous prime is 53899873. The next prime is 53899921. The reversal of 53899889 is 98899835.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28729600 + 25170289 = 5360^2 + 5017^2 .

It is a cyclic number.

It is not a de Polignac number, because 53899889 - 2⁴ = 53899873 is a prime.

It is not a weakly prime, because it can be changed into another prime (53899849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26949944 + 26949945.

It is an arithmetic number, because the mean of its divisors is an integer number (26949945).

Almost surely, 2^53899889 is an apocalyptic number.

It is an amenable number.

53899889 is a deficient number, since it is larger than the sum of its proper divisors (1).

53899889 is an equidigital number, since it uses as much as digits as its factorization.

53899889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5598720, while the sum is 59.

The square root of 53899889 is about 7341.6543775909. The cubic root of 53899889 is about 377.7425927791.

The spelling of 53899889 in words is "fifty-three million, eight hundred ninety-nine thousand, eight hundred eighty-nine".