249041983 has 2 divisors, whose sum is σ = 249041984. Its totient is φ = 249041982.

The previous prime is 249041963. The next prime is 249042007. The reversal of 249041983 is 389140942.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-249041983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (249041963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124520991 + 124520992.

It is an arithmetic number, because the mean of its divisors is an integer number (124520992).

Almost surely, 2^249041983 is an apocalyptic number.

249041983 is a deficient number, since it is larger than the sum of its proper divisors (1).

249041983 is an equidigital number, since it uses as much as digits as its factorization.

249041983 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 249041983 is about 15781.0640642512. The cubic root of 249041983 is about 629.1548110295.

The spelling of 249041983 in words is "two hundred forty-nine million, forty-one thousand, nine hundred eighty-three".