269249989 has 4 divisors (see below), whose sum is σ = 270737740. Its totient is φ = 267762240.

The previous prime is 269249987. The next prime is 269250001. The reversal of 269249989 is 989942962.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 989942962 = 2 ⋅494971481.

It can be written as a sum of positive squares in 2 ways, for example, as 25421764 + 243828225 = 5042^2 + 15615^2 .

It is a cyclic number.

It is not a de Polignac number, because 269249989 - 2¹ = 269249987 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (269249987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 743604 + ... + 743965.

It is an arithmetic number, because the mean of its divisors is an integer number (67684435).

Almost surely, 2^269249989 is an apocalyptic number.

It is an amenable number.

269249989 is a deficient number, since it is larger than the sum of its proper divisors (1487751).

269249989 is a wasteful number, since it uses less digits than its factorization.

269249989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1487750.

The product of its digits is 5038848, while the sum is 58.

The square root of 269249989 is about 16408.8387462367. The cubic root of 269249989 is about 645.7313891545.

The spelling of 269249989 in words is "two hundred sixty-nine million, two hundred forty-nine thousand, nine hundred eighty-nine".