249129269 has 2 divisors, whose sum is σ = 249129270. Its totient is φ = 249129268.

The previous prime is 249129191. The next prime is 249129289. The reversal of 249129269 is 962921942.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 232928644 + 16200625 = 15262^2 + 4025^2 .

It is a cyclic number.

It is not a de Polignac number, because 249129269 - 2¹⁶ = 249063733 is a prime.

It is a super-2 number, since 2×249129269² = 124130785344948722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (249129289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124564634 + 124564635.

It is an arithmetic number, because the mean of its divisors is an integer number (124564635).

Almost surely, 2^249129269 is an apocalyptic number.

It is an amenable number.

249129269 is a deficient number, since it is larger than the sum of its proper divisors (1).

249129269 is an equidigital number, since it uses as much as digits as its factorization.

249129269 is an evil number, because the sum of its binary digits is even.

The product of its digits is 139968, while the sum is 44.

The square root of 249129269 is about 15783.8293515864. The cubic root of 249129269 is about 629.2283059902.

The spelling of 249129269 in words is "two hundred forty-nine million, one hundred twenty-nine thousand, two hundred sixty-nine".