249391006829 has 2 divisors, whose sum is σ = 249391006830. Its totient is φ = 249391006828.

The previous prime is 249391006807. The next prime is 249391006841. The reversal of 249391006829 is 928600193942.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 231936633604 + 17454373225 = 481598^2 + 132115^2 .

It is a cyclic number.

It is not a de Polignac number, because 249391006829 - 2⁸ = 249391006573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (249391006889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124695503414 + 124695503415.

It is an arithmetic number, because the mean of its divisors is an integer number (124695503415).

Almost surely, 2^249391006829 is an apocalyptic number.

It is an amenable number.

249391006829 is a deficient number, since it is larger than the sum of its proper divisors (1).

249391006829 is an equidigital number, since it uses as much as digits as its factorization.

249391006829 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1679616, while the sum is 53.

The spelling of 249391006829 in words is "two hundred forty-nine billion, three hundred ninety-one million, six thousand, eight hundred twenty-nine".