997322369 has 8 divisors (see below), whose sum is σ = 1052388000. Its totient is φ = 942514272.

The previous prime is 997322351. The next prime is 997322377. The reversal of 997322369 is 963223799.

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

It is a cyclic number.

It is not a de Polignac number, because 997322369 - 2²⁸ = 728886913 is a prime.

It is a super-2 number, since 2×997322369² = 1989303815415544322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (997322869) 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 in 7 ways as a sum of consecutive naturals, for example, 56399 + ... + 71940.

It is an arithmetic number, because the mean of its divisors is an integer number (131548500).

Almost surely, 2^997322369 is an apocalyptic number.

It is an amenable number.

997322369 is a deficient number, since it is larger than the sum of its proper divisors (55065631).

997322369 is a wasteful number, since it uses less digits than its factorization.

997322369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128767.

The product of its digits is 1102248, while the sum is 50.

The square root of 997322369 is about 31580.4111594514. The cubic root of 997322369 is about 999.1066585120.

The spelling of 997322369 in words is "nine hundred ninety-seven million, three hundred twenty-two thousand, three hundred sixty-nine".