855819492 has 24 divisors (see below), whose sum is σ = 2178449952. Its totient is φ = 259339200.

The previous prime is 855819479. The next prime is 855819499. The reversal of 855819492 is 294918558.

It is not an unprimeable number, because it can be changed into a prime (855819499) 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, 3241609 + ... + 3241872.

It is an arithmetic number, because the mean of its divisors is an integer number (90768748).

Almost surely, 2^855819492 is an apocalyptic number.

It is an amenable number.

855819492 is an abundant number, since it is smaller than the sum of its proper divisors (1322630460).

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

855819492 is a wasteful number, since it uses less digits than its factorization.

855819492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6483499 (or 6483497 counting only the distinct ones).

The product of its digits is 1036800, while the sum is 51.

The square root of 855819492 is about 29254.3926957987. The cubic root of 855819492 is about 949.4251340158.

The spelling of 855819492 in words is "eight hundred fifty-five million, eight hundred nineteen thousand, four hundred ninety-two".