249763939 has 2 divisors, whose sum is σ = 249763940. Its totient is φ = 249763938.

The previous prime is 249763937. The next prime is 249763963. The reversal of 249763939 is 939367942.

249763939 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 249763939 - 2¹ = 249763937 is a prime.

Together with 249763937, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (249763937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124881969 + 124881970.

It is an arithmetic number, because the mean of its divisors is an integer number (124881970).

Almost surely, 2^249763939 is an apocalyptic number.

249763939 is a deficient number, since it is larger than the sum of its proper divisors (1).

249763939 is an equidigital number, since it uses as much as digits as its factorization.

249763939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2204496, while the sum is 52.

The square root of 249763939 is about 15803.9216335693. The cubic root of 249763939 is about 629.7621836915.

The spelling of 249763939 in words is "two hundred forty-nine million, seven hundred sixty-three thousand, nine hundred thirty-nine".