249631229 has 2 divisors, whose sum is σ = 249631230. Its totient is φ = 249631228.

The previous prime is 249631199. The next prime is 249631271. The reversal of 249631229 is 922136942.

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., 160706329 + 88924900 = 12677^2 + 9430^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-249631229 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 249631192 and 249631201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (249631279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124815614 + 124815615.

It is an arithmetic number, because the mean of its divisors is an integer number (124815615).

Almost surely, 2^249631229 is an apocalyptic number.

It is an amenable number.

249631229 is a deficient number, since it is larger than the sum of its proper divisors (1).

249631229 is an equidigital number, since it uses as much as digits as its factorization.

249631229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46656, while the sum is 38.

The square root of 249631229 is about 15799.7224342708. The cubic root of 249631229 is about 629.6506242906.

The spelling of 249631229 in words is "two hundred forty-nine million, six hundred thirty-one thousand, two hundred twenty-nine".