997867299 has 48 divisors (see below), whose sum is σ = 1593914112. Its totient is φ = 547344000.

The previous prime is 997867291. The next prime is 997867301. The reversal of 997867299 is 992768799.

It is not a de Polignac number, because 997867299 - 2³ = 997867291 is a prime.

It is not an unprimeable number, because it can be changed into a prime (997867291) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 5512989 + ... + 5513169.

It is an arithmetic number, because the mean of its divisors is an integer number (33206544).

Almost surely, 2^997867299 is an apocalyptic number.

997867299 is a deficient number, since it is larger than the sum of its proper divisors (596046813).

997867299 is a wasteful number, since it uses less digits than its factorization.

997867299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460 (or 279 counting only the distinct ones).

The product of its digits is 30862944, while the sum is 66.

The square root of 997867299 is about 31589.0376396623. The cubic root of 997867299 is about 999.2885936877.

It can be divided in two parts, 9978 and 67299, that added together give a palindrome (77277).

The spelling of 997867299 in words is "nine hundred ninety-seven million, eight hundred sixty-seven thousand, two hundred ninety-nine".