249986827 has 2 divisors, whose sum is σ = 249986828. Its totient is φ = 249986826.

The previous prime is 249986801. The next prime is 249986851. The reversal of 249986827 is 728689942.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 249986827 - 2¹⁵ = 249954059 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (249986897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124993413 + 124993414.

It is an arithmetic number, because the mean of its divisors is an integer number (124993414).

Almost surely, 2^249986827 is an apocalyptic number.

249986827 is a deficient number, since it is larger than the sum of its proper divisors (1).

249986827 is an equidigital number, since it uses as much as digits as its factorization.

249986827 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3483648, while the sum is 55.

The square root of 249986827 is about 15810.9717285181. The cubic root of 249986827 is about 629.9494601264.

The spelling of 249986827 in words is "two hundred forty-nine million, nine hundred eighty-six thousand, eight hundred twenty-seven".