249629893 has 2 divisors, whose sum is σ = 249629894. Its totient is φ = 249629892.

The previous prime is 249629881. The next prime is 249629903. The reversal of 249629893 is 398926942.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 154703844 + 94926049 = 12438^2 + 9743^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-249629893 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 249629893.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (249629813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124814946 + 124814947.

It is an arithmetic number, because the mean of its divisors is an integer number (124814947).

Almost surely, 2^249629893 is an apocalyptic number.

It is an amenable number.

249629893 is a deficient number, since it is larger than the sum of its proper divisors (1).

249629893 is an equidigital number, since it uses as much as digits as its factorization.

249629893 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1679616, while the sum is 52.

The square root of 249629893 is about 15799.6801549905. The cubic root of 249629893 is about 629.6495010141.

The spelling of 249629893 in words is "two hundred forty-nine million, six hundred twenty-nine thousand, eight hundred ninety-three".