266078949 has 4 divisors (see below), whose sum is σ = 354771936. Its totient is φ = 177385964.

The previous prime is 266078903. The next prime is 266078959. The reversal of 266078949 is 949870662.

It is a happy number.

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 not a de Polignac number, because 266078949 - 2⁸ = 266078693 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266078959) 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, 44346489 + ... + 44346494.

It is an arithmetic number, because the mean of its divisors is an integer number (88692984).

Almost surely, 2^266078949 is an apocalyptic number.

It is an amenable number.

266078949 is a deficient number, since it is larger than the sum of its proper divisors (88692987).

266078949 is an equidigital number, since it uses as much as digits as its factorization.

266078949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88692986.

The product of its (nonzero) digits is 1306368, while the sum is 51.

The square root of 266078949 is about 16311.9265876229. The cubic root of 266078949 is about 643.1863792837.

The spelling of 266078949 in words is "two hundred sixty-six million, seventy-eight thousand, nine hundred forty-nine".