249989827 has 2 divisors, whose sum is σ = 249989828. Its totient is φ = 249989826.

The previous prime is 249989819. The next prime is 249989837. The reversal of 249989827 is 728989942.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 249989827 - 2³ = 249989819 is a prime.

It is not a weakly prime, because it can be changed into another prime (249989837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124994913 + 124994914.

It is an arithmetic number, because the mean of its divisors is an integer number (124994914).

Almost surely, 2^249989827 is an apocalyptic number.

249989827 is a deficient number, since it is larger than the sum of its proper divisors (1).

249989827 is an equidigital number, since it uses as much as digits as its factorization.

249989827 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5225472, while the sum is 58.

The square root of 249989827 is about 15811.0665990628. The cubic root of 249989827 is about 629.9519800470.

The spelling of 249989827 in words is "two hundred forty-nine million, nine hundred eighty-nine thousand, eight hundred twenty-seven".