866980444 has 24 divisors (see below), whose sum is σ = 1676102400. Its totient is φ = 389092080.

The previous prime is 866980427. The next prime is 866980451. The reversal of 866980444 is 444089668.

It is a happy number.

866980444 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121234 + ... + 128185.

It is an arithmetic number, because the mean of its divisors is an integer number (69837600).

Almost surely, 2^866980444 is an apocalyptic number.

It is an amenable number.

866980444 is a deficient number, since it is larger than the sum of its proper divisors (809121956).

866980444 is a wasteful number, since it uses less digits than its factorization.

866980444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249513 (or 249511 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 49.

The square root of 866980444 is about 29444.5316485082. The cubic root of 866980444 is about 953.5345501991.

The spelling of 866980444 in words is "eight hundred sixty-six million, nine hundred eighty thousand, four hundred forty-four".