54089989 has 2 divisors, whose sum is σ = 54089990. Its totient is φ = 54089988.

The previous prime is 54089983. The next prime is 54089993. The reversal of 54089989 is 98998045.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28536964 + 25553025 = 5342^2 + 5055^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54089989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54089983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27044994 + 27044995.

It is an arithmetic number, because the mean of its divisors is an integer number (27044995).

Almost surely, 2^54089989 is an apocalyptic number.

It is an amenable number.

54089989 is a deficient number, since it is larger than the sum of its proper divisors (1).

54089989 is an equidigital number, since it uses as much as digits as its factorization.

54089989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 933120, while the sum is 52.

The square root of 54089989 is about 7354.5896554465. The cubic root of 54089989 is about 378.1861596221.

The spelling of 54089989 in words is "fifty-four million, eighty-nine thousand, nine hundred eighty-nine".