998724479 has 8 divisors (see below), whose sum is σ = 1020757248. Its totient is φ = 976724440.

The previous prime is 998724473. The next prime is 998724497. The reversal of 998724479 is 974427899.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 998724479 - 2¹² = 998720383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998724473) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59624 + ... + 74514.

It is an arithmetic number, because the mean of its divisors is an integer number (127594656).

Almost surely, 2^998724479 is an apocalyptic number.

998724479 is a deficient number, since it is larger than the sum of its proper divisors (22032769).

998724479 is a wasteful number, since it uses less digits than its factorization.

998724479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16365.

The product of its digits is 9144576, while the sum is 59.

The square root of 998724479 is about 31602.6024086625. The cubic root of 998724479 is about 999.5746454325.

The spelling of 998724479 in words is "nine hundred ninety-eight million, seven hundred twenty-four thousand, four hundred seventy-nine".