845899740 has 192 divisors, whose sum is σ = 3069696000. Its totient is φ = 193306176.

The previous prime is 845899739. The next prime is 845899777. The reversal of 845899740 is 47998548.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 182937 + ... + 187503.

It is an arithmetic number, because the mean of its divisors is an integer number (15988000).

Almost surely, 2^845899740 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 845899740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1534848000).

845899740 is an abundant number, since it is smaller than the sum of its proper divisors (2223796260).

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

845899740 is a wasteful number, since it uses less digits than its factorization.

845899740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4606 (or 4584 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 54.

The square root of 845899740 is about 29084.3555885290. The cubic root of 845899740 is about 945.7426261326.

The spelling of 845899740 in words is "eight hundred forty-five million, eight hundred ninety-nine thousand, seven hundred forty".