845974840 has 32 divisors (see below), whose sum is σ = 1934652960. Its totient is φ = 332841600.

The previous prime is 845974837. The next prime is 845974873. The reversal of 845974840 is 48479548.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 170916 + ... + 175795.

It is an arithmetic number, because the mean of its divisors is an integer number (60457905).

Almost surely, 2^845974840 is an apocalyptic number.

It is an amenable number.

845974840 is an abundant number, since it is smaller than the sum of its proper divisors (1088678120).

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

845974840 is a wasteful number, since it uses less digits than its factorization.

845974840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346783 (or 346779 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 49.

The square root of 845974840 is about 29085.6466319730. The cubic root of 845974840 is about 945.7706133617.

The spelling of 845974840 in words is "eight hundred forty-five million, nine hundred seventy-four thousand, eight hundred forty".