4000069 has 8 divisors (see below), whose sum is σ = 4136832. Its totient is φ = 3865680.

The previous prime is 4000067. The next prime is 4000079. The reversal of 4000069 is 9600004.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4000069 - 2¹ = 4000067 is a prime.

It is a super-2 number, since 2×4000069² = 32001104009522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4000063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3232 + ... + 4294.

It is an arithmetic number, because the mean of its divisors is an integer number (517104).

Almost surely, 2^4000069 is an apocalyptic number.

It is an amenable number.

4000069 is a deficient number, since it is larger than the sum of its proper divisors (136763).

4000069 is a wasteful number, since it uses less digits than its factorization.

4000069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1187.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 4000069 is about 2000.0172499256. The cubic root of 4000069 is about 158.7410179472.

The spelling of 4000069 in words is "four million, sixty-nine", and thus it is an aban number.