8542869 has 4 divisors (see below), whose sum is σ = 11390496. Its totient is φ = 5695244.

The previous prime is 8542847. The next prime is 8542873. The reversal of 8542869 is 9682458.

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 8542869 - 2⁹ = 8542357 is a prime.

It is a super-2 number, since 2×8542869² = 145961221502322, which contains 22 as substring.

It is an Ulam number.

8542869 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 8542869.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8542879) 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, 1423809 + ... + 1423814.

It is an arithmetic number, because the mean of its divisors is an integer number (2847624).

Almost surely, 2^8542869 is an apocalyptic number.

It is an amenable number.

8542869 is a deficient number, since it is larger than the sum of its proper divisors (2847627).

8542869 is a wasteful number, since it uses less digits than its factorization.

8542869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2847626.

The product of its digits is 138240, while the sum is 42.

The square root of 8542869 is about 2922.8186738147. The cubic root of 8542869 is about 204.4252710459.

Adding to 8542869 its sum of digits (42), we get a triangular number (8542911 = T₄₁₃₃).

The spelling of 8542869 in words is "eight million, five hundred forty-two thousand, eight hundred sixty-nine".