998528399 has 8 divisors (see below), whose sum is σ = 1099298640. Its totient is φ = 899424000.

The previous prime is 998528389. The next prime is 998528407. The reversal of 998528399 is 993825899.

It is a happy number.

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 998528399 - 2²⁰ = 997479823 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998528329) 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, 415202 + ... + 417599.

It is an arithmetic number, because the mean of its divisors is an integer number (137412330).

Almost surely, 2^998528399 is an apocalyptic number.

998528399 is a deficient number, since it is larger than the sum of its proper divisors (100770241).

998528399 is a wasteful number, since it uses less digits than its factorization.

998528399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 832921.

The product of its digits is 12597120, while the sum is 62.

The square root of 998528399 is about 31599.4999802212. The cubic root of 998528399 is about 999.5092255131.

The spelling of 998528399 in words is "nine hundred ninety-eight million, five hundred twenty-eight thousand, three hundred ninety-nine".