869955854 has 4 divisors (see below), whose sum is σ = 1304933784. Its totient is φ = 434977926.

The previous prime is 869955851. The next prime is 869955899. The reversal of 869955854 is 458559968.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 869955793 and 869955802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (869955851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 217488962 + ... + 217488965.

It is an arithmetic number, because the mean of its divisors is an integer number (326233446).

Almost surely, 2^869955854 is an apocalyptic number.

869955854 is a deficient number, since it is larger than the sum of its proper divisors (434977930).

869955854 is a wasteful number, since it uses less digits than its factorization.

869955854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434977929.

The product of its digits is 15552000, while the sum is 59.

The square root of 869955854 is about 29495.0140532260. The cubic root of 869955854 is about 954.6241237091.

The spelling of 869955854 in words is "eight hundred sixty-nine million, nine hundred fifty-five thousand, eight hundred fifty-four".