249079697 has 2 divisors, whose sum is σ = 249079698. Its totient is φ = 249079696.

The previous prime is 249079687. The next prime is 249079709. The reversal of 249079697 is 796970942.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 241149841 + 7929856 = 15529^2 + 2816^2 .

It is a cyclic number.

It is not a de Polignac number, because 249079697 - 2¹⁰ = 249078673 is a prime.

It is a super-2 number, since 2×249079697² = 124081390915223618, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (249079687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124539848 + 124539849.

It is an arithmetic number, because the mean of its divisors is an integer number (124539849).

Almost surely, 2^249079697 is an apocalyptic number.

It is an amenable number.

249079697 is a deficient number, since it is larger than the sum of its proper divisors (1).

249079697 is an equidigital number, since it uses as much as digits as its factorization.

249079697 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1714608, while the sum is 53.

The square root of 249079697 is about 15782.2589321047. The cubic root of 249079697 is about 629.1865683884.

The spelling of 249079697 in words is "two hundred forty-nine million, seventy-nine thousand, six hundred ninety-seven".