855874919 has 12 divisors (see below), whose sum is σ = 898023336. Its totient is φ = 815627472.

The previous prime is 855874913. The next prime is 855874927. The reversal of 855874919 is 919478558.

It is a de Polignac number, because none of the positive numbers 2^k-855874919 is a prime.

It is a super-2 number, since 2×855874919² = 1465043753946513122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855874913) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 146849 + ... + 152565.

It is an arithmetic number, because the mean of its divisors is an integer number (74835278).

Almost surely, 2^855874919 is an apocalyptic number.

855874919 is a deficient number, since it is larger than the sum of its proper divisors (42148417).

855874919 is a wasteful number, since it uses less digits than its factorization.

855874919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6046 (or 6023 counting only the distinct ones).

The product of its digits is 3628800, while the sum is 56.

The square root of 855874919 is about 29255.3400082788. The cubic root of 855874919 is about 949.4456300244.

The spelling of 855874919 in words is "eight hundred fifty-five million, eight hundred seventy-four thousand, nine hundred nineteen".