254831389 has 2 divisors, whose sum is σ = 254831390. Its totient is φ = 254831388.

The previous prime is 254831279. The next prime is 254831407. The reversal of 254831389 is 983138452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 175032900 + 79798489 = 13230^2 + 8933^2 .

It is a cyclic number.

It is not a de Polignac number, because 254831389 - 2¹⁷ = 254700317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (254831189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127415694 + 127415695.

It is an arithmetic number, because the mean of its divisors is an integer number (127415695).

Almost surely, 2^254831389 is an apocalyptic number.

It is an amenable number.

254831389 is a deficient number, since it is larger than the sum of its proper divisors (1).

254831389 is an equidigital number, since it uses as much as digits as its factorization.

254831389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 207360, while the sum is 43.

The square root of 254831389 is about 15963.4391344722. The cubic root of 254831389 is about 633.9927727584.

The spelling of 254831389 in words is "two hundred fifty-four million, eight hundred thirty-one thousand, three hundred eighty-nine".