249888773 has 2 divisors, whose sum is σ = 249888774. Its totient is φ = 249888772.

The previous prime is 249888731. The next prime is 249888791. The reversal of 249888773 is 377888942.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 244046884 + 5841889 = 15622^2 + 2417^2 .

It is a cyclic number.

It is not a de Polignac number, because 249888773 - 2¹⁶ = 249823237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (249888173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124944386 + 124944387.

It is an arithmetic number, because the mean of its divisors is an integer number (124944387).

Almost surely, 2^249888773 is an apocalyptic number.

It is an amenable number.

249888773 is a deficient number, since it is larger than the sum of its proper divisors (1).

249888773 is an equidigital number, since it uses as much as digits as its factorization.

249888773 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5419008, while the sum is 56.

The square root of 249888773 is about 15807.8706029623. The cubic root of 249888773 is about 629.8670862631.

The spelling of 249888773 in words is "two hundred forty-nine million, eight hundred eighty-eight thousand, seven hundred seventy-three".