998970842 has 8 divisors (see below), whose sum is σ = 1498598496. Its totient is φ = 499438012.

The previous prime is 998970839. The next prime is 998970887. The reversal of 998970842 is 248079899.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15803 + ... + 47409.

It is an arithmetic number, because the mean of its divisors is an integer number (187324812).

Almost surely, 2^998970842 is an apocalyptic number.

It is a pronic number, being equal to 31606×31607.

998970842 is a deficient number, since it is larger than the sum of its proper divisors (499627654).

998970842 is a wasteful number, since it uses less digits than its factorization.

998970842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47412.

The product of its (nonzero) digits is 2612736, while the sum is 56.

The square root of 998970842 is about 31606.4999960451. The cubic root of 998970842 is about 999.6568295809.

The spelling of 998970842 in words is "nine hundred ninety-eight million, nine hundred seventy thousand, eight hundred forty-two".