989841873 has 16 divisors (see below), whose sum is σ = 1363214336. Its totient is φ = 638208720.

The previous prime is 989841859. The next prime is 989841877. The reversal of 989841873 is 378148989.

It is a de Polignac number, because none of the positive numbers 2^k-989841873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (989841877) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 247536 + ... + 251502.

It is an arithmetic number, because the mean of its divisors is an integer number (85200896).

Almost surely, 2^989841873 is an apocalyptic number.

989841873 is a gapful number since it is divisible by the number (93) formed by its first and last digit.

It is an amenable number.

989841873 is a deficient number, since it is larger than the sum of its proper divisors (373372463).

989841873 is a wasteful number, since it uses less digits than its factorization.

989841873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6684.

The product of its digits is 3483648, while the sum is 57.

The square root of 989841873 is about 31461.7525417768. The cubic root of 989841873 is about 996.6024272393.

The spelling of 989841873 in words is "nine hundred eighty-nine million, eight hundred forty-one thousand, eight hundred seventy-three".