944780849 has 4 divisors (see below), whose sum is σ = 947457636. Its totient is φ = 942104064.

The previous prime is 944780843. The next prime is 944780857. The reversal of 944780849 is 948087449.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 948087449 = 1471 ⋅644519.

It can be written as a sum of positive squares in 2 ways, for example, as 240250000 + 704530849 = 15500^2 + 26543^2 .

It is a cyclic number.

It is not a de Polignac number, because 944780849 - 2²⁸ = 676345393 is a prime.

It is a super-2 number, since 2×944780849² = 1785221705274321602, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 944780849.

It is not an unprimeable number, because it can be changed into a prime (944780843) 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, 1337864 + ... + 1338569.

It is an arithmetic number, because the mean of its divisors is an integer number (236864409).

Almost surely, 2^944780849 is an apocalyptic number.

It is an amenable number.

944780849 is a deficient number, since it is larger than the sum of its proper divisors (2676787).

944780849 is a wasteful number, since it uses less digits than its factorization.

944780849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2676786.

The product of its (nonzero) digits is 2322432, while the sum is 53.

The square root of 944780849 is about 30737.2875999168. The cubic root of 944780849 is about 981.2440292603.

The spelling of 944780849 in words is "nine hundred forty-four million, seven hundred eighty thousand, eight hundred forty-nine".