998957441 has 4 divisors (see below), whose sum is σ = 1000487892. Its totient is φ = 997426992.

The previous prime is 998957429. The next prime is 998957473. The reversal of 998957441 is 144759899.

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 463497841 + 535459600 = 21529^2 + 23140^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-998957441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (998957741) 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, 764246 + ... + 765551.

It is an arithmetic number, because the mean of its divisors is an integer number (250121973).

Almost surely, 2^998957441 is an apocalyptic number.

It is an amenable number.

998957441 is a deficient number, since it is larger than the sum of its proper divisors (1530451).

998957441 is a wasteful number, since it uses less digits than its factorization.

998957441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1530450.

The product of its digits is 3265920, while the sum is 56.

The square root of 998957441 is about 31606.2879978020. The cubic root of 998957441 is about 999.6523594934.

The spelling of 998957441 in words is "nine hundred ninety-eight million, nine hundred fifty-seven thousand, four hundred forty-one".