8042869 has 4 divisors (see below), whose sum is σ = 8118144. Its totient is φ = 7967596.

The previous prime is 8042863. The next prime is 8042897. The reversal of 8042869 is 9682408.

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 8042869 - 2³ = 8042861 is a prime.

It is a super-2 number, since 2×8042869² = 129375483502322, which contains 22 as substring.

It is a Duffinian number.

8042869 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8042861) 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, 37477 + ... + 37690.

It is an arithmetic number, because the mean of its divisors is an integer number (2029536).

Almost surely, 2^8042869 is an apocalyptic number.

It is an amenable number.

8042869 is a deficient number, since it is larger than the sum of its proper divisors (75275).

8042869 is a wasteful number, since it uses less digits than its factorization.

8042869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75274.

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 8042869 is about 2835.9952397703. The cubic root of 8042869 is about 200.3566054515.

It can be divided in two parts, 8042 and 869, that added together give a triangular number (8911 = T₁₃₃).

The spelling of 8042869 in words is "eight million, forty-two thousand, eight hundred sixty-nine".