247999373 has 2 divisors, whose sum is σ = 247999374. Its totient is φ = 247999372.

The previous prime is 247999369. The next prime is 247999391. The reversal of 247999373 is 373999742.

It is a happy number.

247999373 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 can be written as a sum of positive squares in only one way, i.e., 205005124 + 42994249 = 14318^2 + 6557^2 .

It is a cyclic number.

It is not a de Polignac number, because 247999373 - 2² = 247999369 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (247999303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123999686 + 123999687.

It is an arithmetic number, because the mean of its divisors is an integer number (123999687).

Almost surely, 2^247999373 is an apocalyptic number.

It is an amenable number.

247999373 is a deficient number, since it is larger than the sum of its proper divisors (1).

247999373 is an equidigital number, since it uses as much as digits as its factorization.

247999373 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2571912, while the sum is 53.

The square root of 247999373 is about 15747.9958407411. The cubic root of 247999373 is about 628.2756010032.

The spelling of 247999373 in words is "two hundred forty-seven million, nine hundred ninety-nine thousand, three hundred seventy-three".