249983047 has 2 divisors, whose sum is σ = 249983048. Its totient is φ = 249983046.

The previous prime is 249983023. The next prime is 249983051. The reversal of 249983047 is 740389942.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 249983047 - 2⁷ = 249982919 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 249982988 and 249983006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (249983077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124991523 + 124991524.

It is an arithmetic number, because the mean of its divisors is an integer number (124991524).

Almost surely, 2^249983047 is an apocalyptic number.

249983047 is a deficient number, since it is larger than the sum of its proper divisors (1).

249983047 is an equidigital number, since it uses as much as digits as its factorization.

249983047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 435456, while the sum is 46.

The square root of 249983047 is about 15810.8521908213. The cubic root of 249983047 is about 629.9462849978.

The spelling of 249983047 in words is "two hundred forty-nine million, nine hundred eighty-three thousand, forty-seven".