774985982 has 4 divisors (see below), whose sum is σ = 1162478976. Its totient is φ = 387492990.

The previous prime is 774985969. The next prime is 774985993. The reversal of 774985982 is 289589477.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193746494 + ... + 193746497.

It is an arithmetic number, because the mean of its divisors is an integer number (290619744).

Almost surely, 2^774985982 is an apocalyptic number.

774985982 is a deficient number, since it is larger than the sum of its proper divisors (387492994).

774985982 is a wasteful number, since it uses less digits than its factorization.

774985982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387492993.

The product of its digits is 10160640, while the sum is 59.

The square root of 774985982 is about 27838.5700422992. The cubic root of 774985982 is about 918.5397368371.

The spelling of 774985982 in words is "seven hundred seventy-four million, nine hundred eighty-five thousand, nine hundred eighty-two".