905969 has 4 divisors (see below), whose sum is σ = 914544. Its totient is φ = 897396.

The previous prime is 905963. The next prime is 905999. The reversal of 905969 is 969509.

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 905969 - 2⁸ = 905713 is a prime.

It is a super-2 number, since 2×905969² = 1641559657922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (905963) 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, 4127 + ... + 4340.

It is an arithmetic number, because the mean of its divisors is an integer number (228636).

2⁹⁰⁵⁹⁶⁹ is an apocalyptic number.

It is an amenable number.

905969 is a deficient number, since it is larger than the sum of its proper divisors (8575).

905969 is a wasteful number, since it uses less digits than its factorization.

905969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8574.

The product of its (nonzero) digits is 21870, while the sum is 38.

The square root of 905969 is about 951.8240383600. The cubic root of 905969 is about 96.7619129925.

The spelling of 905969 in words is "nine hundred five thousand, nine hundred sixty-nine".