869542858 has 8 divisors (see below), whose sum is σ = 1322181828. Its totient is φ = 428815584.

The previous prime is 869542837. The next prime is 869542859. The reversal of 869542858 is 858245968.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 868304089 + 1238769 = 29467^2 + 1113^2 .

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

It is a super-2 number, since 2×869542858² = 1512209563797616328, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 869542799 and 869542808.

It is not an unprimeable number, because it can be changed into a prime (869542859) 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, 2977741 + ... + 2978032.

Almost surely, 2^869542858 is an apocalyptic number.

869542858 is a deficient number, since it is larger than the sum of its proper divisors (452638970).

869542858 is a wasteful number, since it uses less digits than its factorization.

869542858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5955848.

The product of its digits is 5529600, while the sum is 55.

The square root of 869542858 is about 29488.0121066172. The cubic root of 869542858 is about 954.4730362151.

The spelling of 869542858 in words is "eight hundred sixty-nine million, five hundred forty-two thousand, eight hundred fifty-eight".