989724343 has 4 divisors (see below), whose sum is σ = 1047943440. Its totient is φ = 931505248.

The previous prime is 989724319. The next prime is 989724347. The reversal of 989724343 is 343427989.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 989724343 - 2²⁹ = 452853431 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (989724347) 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, 29109523 + ... + 29109556.

It is an arithmetic number, because the mean of its divisors is an integer number (261985860).

Almost surely, 2^989724343 is an apocalyptic number.

989724343 is a deficient number, since it is larger than the sum of its proper divisors (58219097).

989724343 is a wasteful number, since it uses less digits than its factorization.

989724343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58219096.

The product of its digits is 1306368, while the sum is 49.

The square root of 989724343 is about 31459.8846628528. The cubic root of 989724343 is about 996.5629814373.

The spelling of 989724343 in words is "nine hundred eighty-nine million, seven hundred twenty-four thousand, three hundred forty-three".