998924441 has 4 divisors (see below), whose sum is σ = 1008814884. Its totient is φ = 989034000.

The previous prime is 998924413. The next prime is 998924467. The reversal of 998924441 is 144429899.

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

It can be written as a sum of positive squares in 2 ways, for example, as 528034441 + 470890000 = 22979^2 + 21700^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-998924441 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 998924441.

It is not an unprimeable number, because it can be changed into a prime (998924491) 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, 4945070 + ... + 4945271.

It is an arithmetic number, because the mean of its divisors is an integer number (252203721).

Almost surely, 2^998924441 is an apocalyptic number.

It is an amenable number.

998924441 is a deficient number, since it is larger than the sum of its proper divisors (9890443).

998924441 is a wasteful number, since it uses less digits than its factorization.

998924441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9890442.

The product of its digits is 746496, while the sum is 50.

The square root of 998924441 is about 31605.7659454727. The cubic root of 998924441 is about 999.6413517201.

The spelling of 998924441 in words is "nine hundred ninety-eight million, nine hundred twenty-four thousand, four hundred forty-one".