266769489 has 16 divisors (see below), whose sum is σ = 406950912. Its totient is φ = 152272848.

The previous prime is 266769473. The next prime is 266769499. The reversal of 266769489 is 984967662.

It is not a de Polignac number, because 266769489 - 2⁴ = 266769473 is a prime.

It is a super-2 number, since 2×266769489² = 142331920522642242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (266769439) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14182 + ... + 27104.

It is an arithmetic number, because the mean of its divisors is an integer number (25434432).

Almost surely, 2^266769489 is an apocalyptic number.

It is an amenable number.

266769489 is a deficient number, since it is larger than the sum of its proper divisors (140181423).

266769489 is a wasteful number, since it uses less digits than its factorization.

266769489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13916.

The product of its digits is 7838208, while the sum is 57.

The square root of 266769489 is about 16333.0795932672. The cubic root of 266769489 is about 643.7423073326.

The spelling of 266769489 in words is "two hundred sixty-six million, seven hundred sixty-nine thousand, four hundred eighty-nine".