254290391 has 4 divisors (see below), whose sum is σ = 254364984. Its totient is φ = 254215800.

The previous prime is 254290367. The next prime is 254290441. The reversal of 254290391 is 193092452.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 254290391 - 2⁶ = 254290327 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 (254290331) 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, 31925 + ... + 39086.

It is an arithmetic number, because the mean of its divisors is an integer number (63591246).

Almost surely, 2^254290391 is an apocalyptic number.

254290391 is a deficient number, since it is larger than the sum of its proper divisors (74593).

254290391 is an equidigital number, since it uses as much as digits as its factorization.

254290391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74592.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 254290391 is about 15946.4852240235. The cubic root of 254290391 is about 633.5438068392.

The spelling of 254290391 in words is "two hundred fifty-four million, two hundred ninety thousand, three hundred ninety-one".