249083851 has 2 divisors, whose sum is σ = 249083852. Its totient is φ = 249083850.

The previous prime is 249083831. The next prime is 249083869. The reversal of 249083851 is 158380942.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 249083851 - 2²⁷ = 114866123 is a prime.

It is not a weakly prime, because it can be changed into another prime (249083831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124541925 + 124541926.

It is an arithmetic number, because the mean of its divisors is an integer number (124541926).

Almost surely, 2^249083851 is an apocalyptic number.

249083851 is a deficient number, since it is larger than the sum of its proper divisors (1).

249083851 is an equidigital number, since it uses as much as digits as its factorization.

249083851 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 249083851 is about 15782.3905350235. The cubic root of 249083851 is about 629.1900660995.

The spelling of 249083851 in words is "two hundred forty-nine million, eighty-three thousand, eight hundred fifty-one".