248699999 has 2 divisors, whose sum is σ = 248700000. Its totient is φ = 248699998.

The previous prime is 248699939. The next prime is 248700013. The reversal of 248699999 is 999996842.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-248699999 is a prime.

It is a Chen prime.

248699999 is a modest number, since divided by 99999 gives 2486 as remainder.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (248699929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124349999 + 124350000.

It is an arithmetic number, because the mean of its divisors is an integer number (124350000).

Almost surely, 2^248699999 is an apocalyptic number.

248699999 is a deficient number, since it is larger than the sum of its proper divisors (1).

248699999 is an equidigital number, since it uses as much as digits as its factorization.

248699999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22674816, while the sum is 65.

The square root of 248699999 is about 15770.2250776582. The cubic root of 248699999 is about 628.8666943598.

The spelling of 248699999 in words is "two hundred forty-eight million, six hundred ninety-nine thousand, nine hundred ninety-nine".