249555629 has 2 divisors, whose sum is σ = 249555630. Its totient is φ = 249555628.

The previous prime is 249555613. The next prime is 249555659. The reversal of 249555629 is 926555942.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 220374025 + 29181604 = 14845^2 + 5402^2 .

It is a cyclic number.

It is not a de Polignac number, because 249555629 - 2⁴ = 249555613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (249555659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124777814 + 124777815.

It is an arithmetic number, because the mean of its divisors is an integer number (124777815).

Almost surely, 2^249555629 is an apocalyptic number.

It is an amenable number.

249555629 is a deficient number, since it is larger than the sum of its proper divisors (1).

249555629 is an equidigital number, since it uses as much as digits as its factorization.

249555629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 972000, while the sum is 47.

The square root of 249555629 is about 15797.3298060147. The cubic root of 249555629 is about 629.5870553300.

The spelling of 249555629 in words is "two hundred forty-nine million, five hundred fifty-five thousand, six hundred twenty-nine".