897273999 has 12 divisors (see below), whose sum is σ = 1352413296. Its totient is φ = 572174592.

The previous prime is 897273989. The next prime is 897274009. The reversal of 897273999 is 999372798.

It is an interprime number because it is at equal distance from previous prime (897273989) and next prime (897274009).

It is not a de Polignac number, because 897273999 - 2⁸ = 897273743 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (897273919) 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 11 ways as a sum of consecutive naturals, for example, 2167122 + ... + 2167535.

It is an arithmetic number, because the mean of its divisors is an integer number (112701108).

Almost surely, 2^897273999 is an apocalyptic number.

897273999 is a deficient number, since it is larger than the sum of its proper divisors (455139297).

897273999 is a wasteful number, since it uses less digits than its factorization.

897273999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4334686 (or 4334683 counting only the distinct ones).

The product of its digits is 15431472, while the sum is 63.

The square root of 897273999 is about 29954.5321946446. The cubic root of 897273999 is about 964.5136117246.

The spelling of 897273999 in words is "eight hundred ninety-seven million, two hundred seventy-three thousand, nine hundred ninety-nine".