266475949 has 4 divisors (see below), whose sum is σ = 266513436. Its totient is φ = 266438464.

The previous prime is 266475941. The next prime is 266475967. The reversal of 266475949 is 949574662.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 949574662 = 2 ⋅474787331.

It can be written as a sum of positive squares in 2 ways, for example, as 176092900 + 90383049 = 13270^2 + 9507^2 .

It is a cyclic number.

It is not a de Polignac number, because 266475949 - 2³ = 266475941 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 266475896 and 266475905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266475941) 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, 4444 + ... + 23509.

It is an arithmetic number, because the mean of its divisors is an integer number (66628359).

Almost surely, 2^266475949 is an apocalyptic number.

It is an amenable number.

266475949 is a deficient number, since it is larger than the sum of its proper divisors (37487).

266475949 is an equidigital number, since it uses as much as digits as its factorization.

266475949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37486.

The product of its digits is 3265920, while the sum is 52.

The square root of 266475949 is about 16324.0910619857. The cubic root of 266475949 is about 643.5061065725.

The spelling of 266475949 in words is "two hundred sixty-six million, four hundred seventy-five thousand, nine hundred forty-nine".