909897 has 4 divisors (see below), whose sum is σ = 1213200. Its totient is φ = 606596.

The previous prime is 909889. The next prime is 909899. The reversal of 909897 is 798909.

It is a happy number.

909897 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 909897 - 2³ = 909889 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (909899) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151647 + ... + 151652.

It is an arithmetic number, because the mean of its divisors is an integer number (303300).

2⁹⁰⁹⁸⁹⁷ is an apocalyptic number.

It is an amenable number.

909897 is a deficient number, since it is larger than the sum of its proper divisors (303303).

909897 is a wasteful number, since it uses less digits than its factorization.

909897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303302.

The product of its (nonzero) digits is 40824, while the sum is 42.

The square root of 909897 is about 953.8852132201. The cubic root of 909897 is about 96.9015545657.

The spelling of 909897 in words is "nine hundred nine thousand, eight hundred ninety-seven".