900069 has 4 divisors (see below), whose sum is σ = 1200096. Its totient is φ = 600044.

The previous prime is 900061. The next prime is 900089. The reversal of 900069 is 960009.

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 900069 - 2³ = 900061 is a prime.

It is a super-2 number, since 2×900069² = 1620248409522, which contains 22 as substring.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (900061) 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, 150009 + ... + 150014.

It is an arithmetic number, because the mean of its divisors is an integer number (300024).

2⁹⁰⁰⁰⁶⁹ is an apocalyptic number.

It is an amenable number.

900069 is a deficient number, since it is larger than the sum of its proper divisors (300027).

900069 is a wasteful number, since it uses less digits than its factorization.

900069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300026.

The product of its (nonzero) digits is 486, while the sum is 24.

The square root of 900069 is about 948.7196635466. The cubic root of 900069 is about 96.5514057593.

The spelling of 900069 in words is "nine hundred thousand, sixty-nine".