998243895 has 16 divisors (see below), whose sum is σ = 1742389632. Its totient is φ = 483996960.

The previous prime is 998243891. The next prime is 998243971. The reversal of 998243895 is 598342899.

It is not a de Polignac number, because 998243895 - 2² = 998243891 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998243891) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3024817 + ... + 3025146.

It is an arithmetic number, because the mean of its divisors is an integer number (108899352).

Almost surely, 2^998243895 is an apocalyptic number.

998243895 is a deficient number, since it is larger than the sum of its proper divisors (744145737).

998243895 is a wasteful number, since it uses less digits than its factorization.

998243895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6049982.

The product of its digits is 5598720, while the sum is 57.

The square root of 998243895 is about 31594.9979427124. The cubic root of 998243895 is about 999.4142886759.

The spelling of 998243895 in words is "nine hundred ninety-eight million, two hundred forty-three thousand, eight hundred ninety-five".