989874349 has 4 divisors (see below), whose sum is σ = 989946720. Its totient is φ = 989801980.

The previous prime is 989874343. The next prime is 989874377. The reversal of 989874349 is 943478989.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 989874349 - 2¹⁷ = 989743277 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (989874343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8719 + ... + 45340.

It is an arithmetic number, because the mean of its divisors is an integer number (247486680).

Almost surely, 2^989874349 is an apocalyptic number.

It is an amenable number.

989874349 is a deficient number, since it is larger than the sum of its proper divisors (72371).

989874349 is a wasteful number, since it uses less digits than its factorization.

989874349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72370.

The product of its digits is 15676416, while the sum is 61.

The square root of 989874349 is about 31462.2686562810. The cubic root of 989874349 is about 996.6133263897.

The spelling of 989874349 in words is "nine hundred eighty-nine million, eight hundred seventy-four thousand, three hundred forty-nine".