775842049 has 4 divisors (see below), whose sum is σ = 809574336. Its totient is φ = 742109764.

The previous prime is 775842043. The next prime is 775842083. The reversal of 775842049 is 940248577.

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 775842049 - 2⁹ = 775841537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (775842043) 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, 16866109 + ... + 16866154.

It is an arithmetic number, because the mean of its divisors is an integer number (202393584).

Almost surely, 2^775842049 is an apocalyptic number.

It is an amenable number.

775842049 is a deficient number, since it is larger than the sum of its proper divisors (33732287).

775842049 is a wasteful number, since it uses less digits than its factorization.

775842049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33732286.

The product of its (nonzero) digits is 564480, while the sum is 46.

The square root of 775842049 is about 27853.9413548604. The cubic root of 775842049 is about 918.8778256196.

The spelling of 775842049 in words is "seven hundred seventy-five million, eight hundred forty-two thousand, forty-nine".