774860989 has 8 divisors (see below), whose sum is σ = 906150080. Its totient is φ = 648720576.

The previous prime is 774860987. The next prime is 774861011. The reversal of 774860989 is 989068477.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 774860989 - 2¹ = 774860987 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (774860981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1286844 + ... + 1287445.

It is an arithmetic number, because the mean of its divisors is an integer number (113268760).

Almost surely, 2^774860989 is an apocalyptic number.

It is an amenable number.

774860989 is a deficient number, since it is larger than the sum of its proper divisors (131289091).

774860989 is a wasteful number, since it uses less digits than its factorization.

774860989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2574339.

The product of its (nonzero) digits is 6096384, while the sum is 58.

The square root of 774860989 is about 27836.3249909179. The cubic root of 774860989 is about 918.4903521975.

The spelling of 774860989 in words is "seven hundred seventy-four million, eight hundred sixty thousand, nine hundred eighty-nine".