249676121 has 2 divisors, whose sum is σ = 249676122. Its totient is φ = 249676120.

The previous prime is 249676117. The next prime is 249676151. The reversal of 249676121 is 121676942.

249676121 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., 247716121 + 1960000 = 15739^2 + 1400^2 .

It is a cyclic number.

It is not a de Polignac number, because 249676121 - 2² = 249676117 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (249676151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124838060 + 124838061.

It is an arithmetic number, because the mean of its divisors is an integer number (124838061).

Almost surely, 2^249676121 is an apocalyptic number.

It is an amenable number.

249676121 is a deficient number, since it is larger than the sum of its proper divisors (1).

249676121 is an equidigital number, since it uses as much as digits as its factorization.

249676121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 38.

The square root of 249676121 is about 15801.1430282749. The cubic root of 249676121 is about 629.6883660717.

The spelling of 249676121 in words is "two hundred forty-nine million, six hundred seventy-six thousand, one hundred twenty-one".