855397368 has 128 divisors (see below), whose sum is σ = 2773555200. Its totient is φ = 239179392.

The previous prime is 855397363. The next prime is 855397373. The reversal of 855397368 is 863793558.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (855397363) and next prime (855397373).

It is a Harshad number since it is a multiple of its sum of digits (54).

Its product of digits (5443200) is a multiple of the sum of its prime divisors (12096).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855397363) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 65046 + ... + 77082.

It is an arithmetic number, because the mean of its divisors is an integer number (21668400).

Almost surely, 2^855397368 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 855397368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1386777600).

855397368 is an abundant number, since it is smaller than the sum of its proper divisors (1918157832).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

855397368 is a wasteful number, since it uses less digits than its factorization.

855397368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12106 (or 12096 counting only the distinct ones).

The product of its digits is 5443200, while the sum is 54.

The square root of 855397368 is about 29247.1770945505. The cubic root of 855397368 is about 949.2690103434.

The spelling of 855397368 in words is "eight hundred fifty-five million, three hundred ninety-seven thousand, three hundred sixty-eight".