998887337 has 4 divisors (see below), whose sum is σ = 1141585536. Its totient is φ = 856189140.

The previous prime is 998887319. The next prime is 998887367. The reversal of 998887337 is 733788899.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 998887337 - 2⁸ = 998887081 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 998887337.

It is not an unprimeable number, because it can be changed into a prime (998887367) 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, 71349089 + ... + 71349102.

It is an arithmetic number, because the mean of its divisors is an integer number (285396384).

Almost surely, 2^998887337 is an apocalyptic number.

It is an amenable number.

998887337 is a deficient number, since it is larger than the sum of its proper divisors (142698199).

998887337 is a wasteful number, since it uses less digits than its factorization.

998887337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142698198.

The product of its digits is 18289152, while the sum is 62.

The square root of 998887337 is about 31605.1789585188. The cubic root of 998887337 is about 999.6289746906.

The spelling of 998887337 in words is "nine hundred ninety-eight million, eight hundred eighty-seven thousand, three hundred thirty-seven".