266290969 has 4 divisors (see below), whose sum is σ = 304332544. Its totient is φ = 228249396.

The previous prime is 266290957. The next prime is 266290991. The reversal of 266290969 is 969092662.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-266290969 is a prime.

It is a super-2 number, since 2×266290969² = 141821760341917922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (266290939) 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, 19020777 + ... + 19020790.

It is an arithmetic number, because the mean of its divisors is an integer number (76083136).

Almost surely, 2^266290969 is an apocalyptic number.

It is an amenable number.

266290969 is a deficient number, since it is larger than the sum of its proper divisors (38041575).

266290969 is an equidigital number, since it uses as much as digits as its factorization.

266290969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38041574.

The product of its (nonzero) digits is 629856, while the sum is 49.

The square root of 266290969 is about 16318.4242192682. The cubic root of 266290969 is about 643.3571709125.

The spelling of 266290969 in words is "two hundred sixty-six million, two hundred ninety thousand, nine hundred sixty-nine".