254456989 has 2 divisors, whose sum is σ = 254456990. Its totient is φ = 254456988.

The previous prime is 254456977. The next prime is 254457017. The reversal of 254456989 is 989654452.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 251064025 + 3392964 = 15845^2 + 1842^2 .

It is a cyclic number.

It is not a de Polignac number, because 254456989 - 2⁵ = 254456957 is a prime.

It is a super-2 number, since 2×254456989² = 129496718501892242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (254456089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127228494 + 127228495.

It is an arithmetic number, because the mean of its divisors is an integer number (127228495).

Almost surely, 2^254456989 is an apocalyptic number.

It is an amenable number.

254456989 is a deficient number, since it is larger than the sum of its proper divisors (1).

254456989 is an equidigital number, since it uses as much as digits as its factorization.

254456989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3110400, while the sum is 52.

The square root of 254456989 is about 15951.7080276690. The cubic root of 254456989 is about 633.6821317537.

The spelling of 254456989 in words is "two hundred fifty-four million, four hundred fifty-six thousand, nine hundred eighty-nine".