998942774 has 8 divisors (see below), whose sum is σ = 1502942088. Its totient is φ = 497962080.

The previous prime is 998942759. The next prime is 998942779. The reversal of 998942774 is 477249899.

998942774 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998942779) 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, 753827 + ... + 755150.

It is an arithmetic number, because the mean of its divisors is an integer number (187867761).

Almost surely, 2^998942774 is an apocalyptic number.

998942774 is a deficient number, since it is larger than the sum of its proper divisors (503999314).

998942774 is a wasteful number, since it uses less digits than its factorization.

998942774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1509310.

The product of its digits is 9144576, while the sum is 59.

The square root of 998942774 is about 31606.0559703358. The cubic root of 998942774 is about 999.6474670685.

The spelling of 998942774 in words is "nine hundred ninety-eight million, nine hundred forty-two thousand, seven hundred seventy-four".