855515384 has 8 divisors (see below), whose sum is σ = 1604091360. Its totient is φ = 427757688.

The previous prime is 855515377. The next prime is 855515387. The reversal of 855515384 is 483515558.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855515387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53469704 + ... + 53469719.

It is an arithmetic number, because the mean of its divisors is an integer number (200511420).

Almost surely, 2^855515384 is an apocalyptic number.

It is an amenable number.

855515384 is a deficient number, since it is larger than the sum of its proper divisors (748575976).

855515384 is a wasteful number, since it uses less digits than its factorization.

855515384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106939429 (or 106939425 counting only the distinct ones).

The product of its digits is 480000, while the sum is 44.

The square root of 855515384 is about 29249.1945872019. The cubic root of 855515384 is about 949.3126640433.

The spelling of 855515384 in words is "eight hundred fifty-five million, five hundred fifteen thousand, three hundred eighty-four".