849442776 has 128 divisors (see below), whose sum is σ = 2634508800. Its totient is φ = 222243840.

The previous prime is 849442729. The next prime is 849442787. The reversal of 849442776 is 677244948.

It is a happy number.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 284620 + ... + 287588.

It is an arithmetic number, because the mean of its divisors is an integer number (20582100).

Almost surely, 2^849442776 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 849442776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1317254400).

849442776 is an abundant number, since it is smaller than the sum of its proper divisors (1785066024).

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

849442776 is a wasteful number, since it uses less digits than its factorization.

849442776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3129 (or 3125 counting only the distinct ones).

The product of its digits is 2709504, while the sum is 51.

The square root of 849442776 is about 29145.2015947737. The cubic root of 849442776 is about 947.0611956245.

The spelling of 849442776 in words is "eight hundred forty-nine million, four hundred forty-two thousand, seven hundred seventy-six".