249286853 has 2 divisors, whose sum is σ = 249286854. Its totient is φ = 249286852.

The previous prime is 249286837. The next prime is 249286901. The reversal of 249286853 is 358682942.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 247842049 + 1444804 = 15743^2 + 1202^2 .

It is a cyclic number.

It is not a de Polignac number, because 249286853 - 2⁴ = 249286837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 249286798 and 249286807.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (249286553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124643426 + 124643427.

It is an arithmetic number, because the mean of its divisors is an integer number (124643427).

Almost surely, 2^249286853 is an apocalyptic number.

It is an amenable number.

249286853 is a deficient number, since it is larger than the sum of its proper divisors (1).

249286853 is an equidigital number, since it uses as much as digits as its factorization.

249286853 is an evil number, because the sum of its binary digits is even.

The product of its digits is 829440, while the sum is 47.

The square root of 249286853 is about 15788.8205069283. The cubic root of 249286853 is about 629.3609485260.

The spelling of 249286853 in words is "two hundred forty-nine million, two hundred eighty-six thousand, eight hundred fifty-three".