998605238 has 4 divisors (see below), whose sum is σ = 1497907860. Its totient is φ = 499302618.

The previous prime is 998605219. The next prime is 998605253. The reversal of 998605238 is 832506899.

998605238 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×998605238² = 1994424842722073288, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249651308 + ... + 249651311.

It is an arithmetic number, because the mean of its divisors is an integer number (374476965).

Almost surely, 2^998605238 is an apocalyptic number.

998605238 is a deficient number, since it is larger than the sum of its proper divisors (499302622).

998605238 is a wasteful number, since it uses less digits than its factorization.

998605238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499302621.

The product of its (nonzero) digits is 933120, while the sum is 50.

The square root of 998605238 is about 31600.7157830325. The cubic root of 998605238 is about 999.5348630145.

The spelling of 998605238 in words is "nine hundred ninety-eight million, six hundred five thousand, two hundred thirty-eight".