909161 has 4 divisors (see below), whose sum is σ = 991824. Its totient is φ = 826500.

The previous prime is 909151. The next prime is 909173. The reversal of 909161 is 161909.

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 909161 - 2¹⁰ = 908137 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 909161.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 909161.

It is not an unprimeable number, because it can be changed into a prime (909151) 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, 41315 + ... + 41336.

It is an arithmetic number, because the mean of its divisors is an integer number (247956).

2⁹⁰⁹¹⁶¹ is an apocalyptic number.

It is an amenable number.

909161 is a deficient number, since it is larger than the sum of its proper divisors (82663).

909161 is a wasteful number, since it uses less digits than its factorization.

909161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82662.

The product of its (nonzero) digits is 486, while the sum is 26.

The square root of 909161 is about 953.4993445200. The cubic root of 909161 is about 96.8754201855.

The spelling of 909161 in words is "nine hundred nine thousand, one hundred sixty-one".