989870206 has 16 divisors (see below), whose sum is σ = 1605402288. Its totient is φ = 455040000.

The previous prime is 989870197. The next prime is 989870249. The reversal of 989870206 is 602078989.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 989870206.

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, 69315 + ... + 82366.

It is an arithmetic number, because the mean of its divisors is an integer number (100337643).

Almost surely, 2^989870206 is an apocalyptic number.

989870206 is a deficient number, since it is larger than the sum of its proper divisors (615532082).

989870206 is a wasteful number, since it uses less digits than its factorization.

989870206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151947.

The product of its (nonzero) digits is 435456, while the sum is 49.

The square root of 989870206 is about 31462.2028154419. The cubic root of 989870206 is about 996.6119359861.

The spelling of 989870206 in words is "nine hundred eighty-nine million, eight hundred seventy thousand, two hundred six".