997849298 has 8 divisors (see below), whose sum is σ = 1496988108. Its totient is φ = 498853264.

The previous prime is 997849253. The next prime is 997849301. The reversal of 997849298 is 892948799.

It can be written as a sum of positive squares in 2 ways, for example, as 930067009 + 67782289 = 30497^2 + 8233^2 .

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 (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16061 + ... + 47472.

Almost surely, 2^997849298 is an apocalyptic number.

997849298 is a deficient number, since it is larger than the sum of its proper divisors (499138810).

997849298 is a wasteful number, since it uses less digits than its factorization.

997849298 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71388.

The product of its digits is 23514624, while the sum is 65.

The square root of 997849298 is about 31588.7527135846. The cubic root of 997849298 is about 999.2825847718.

The spelling of 997849298 in words is "nine hundred ninety-seven million, eight hundred forty-nine thousand, two hundred ninety-eight".