997835854 has 4 divisors (see below), whose sum is σ = 1496753784. Its totient is φ = 498917926.

The previous prime is 997835851. The next prime is 997835873. The reversal of 997835854 is 458538799.

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

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997835851) by changing a digit.

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 as a sum of consecutive naturals, namely, 249458962 + ... + 249458965.

It is an arithmetic number, because the mean of its divisors is an integer number (374188446).

Almost surely, 2^997835854 is an apocalyptic number.

997835854 is a deficient number, since it is larger than the sum of its proper divisors (498917930).

997835854 is a wasteful number, since it uses less digits than its factorization.

997835854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498917929.

The product of its digits is 10886400, while the sum is 58.

The square root of 997835854 is about 31588.5399156086. The cubic root of 997835854 is about 999.2780969814.

The spelling of 997835854 in words is "nine hundred ninety-seven million, eight hundred thirty-five thousand, eight hundred fifty-four".