855424869 has 8 divisors (see below), whose sum is σ = 1228302432. Its totient is φ = 526415280.

The previous prime is 855424799. The next prime is 855424873. The reversal of 855424869 is 968424558.

It is a happy number.

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

It is not a de Polignac number, because 855424869 - 2⁷ = 855424741 is a prime.

It is a super-2 number, since 2×855424869² = 1463503413007334322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855424469) 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, 10966947 + ... + 10967024.

It is an arithmetic number, because the mean of its divisors is an integer number (153537804).

Almost surely, 2^855424869 is an apocalyptic number.

It is an amenable number.

855424869 is a deficient number, since it is larger than the sum of its proper divisors (372877563).

855424869 is a wasteful number, since it uses less digits than its factorization.

855424869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21933987.

The product of its digits is 2764800, while the sum is 51.

The square root of 855424869 is about 29247.6472387096. The cubic root of 855424869 is about 949.2791832246.

The spelling of 855424869 in words is "eight hundred fifty-five million, four hundred twenty-four thousand, eight hundred sixty-nine".