989772146 has 32 divisors (see below), whose sum is σ = 1678726080. Its totient is φ = 433540800.

The previous prime is 989772139. The next prime is 989772167. The reversal of 989772146 is 641277989.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 420545 + ... + 422891.

It is an arithmetic number, because the mean of its divisors is an integer number (52460190).

Almost surely, 2^989772146 is an apocalyptic number.

989772146 is a deficient number, since it is larger than the sum of its proper divisors (688953934).

989772146 is a wasteful number, since it uses less digits than its factorization.

989772146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3050.

The product of its digits is 1524096, while the sum is 53.

The square root of 989772146 is about 31460.6443989948. The cubic root of 989772146 is about 996.5790256129.

The spelling of 989772146 in words is "nine hundred eighty-nine million, seven hundred seventy-two thousand, one hundred forty-six".