254195989 has 4 divisors (see below), whose sum is σ = 254290624. Its totient is φ = 254101356.

The previous prime is 254195947. The next prime is 254196029. The reversal of 254195989 is 989591452.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 254195989 - 2⁹ = 254195477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (254105989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43167 + ... + 48700.

It is an arithmetic number, because the mean of its divisors is an integer number (63572656).

Almost surely, 2^254195989 is an apocalyptic number.

It is an amenable number.

254195989 is a deficient number, since it is larger than the sum of its proper divisors (94635).

254195989 is an equidigital number, since it uses as much as digits as its factorization.

254195989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94634.

The product of its digits is 1166400, while the sum is 52.

The square root of 254195989 is about 15943.5249866521. The cubic root of 254195989 is about 633.4653988365.

The spelling of 254195989 in words is "two hundred fifty-four million, one hundred ninety-five thousand, nine hundred eighty-nine".