845397800 has 48 divisors (see below), whose sum is σ = 2116752540. Its totient is φ = 312145920.

The previous prime is 845397797. The next prime is 845397803. The reversal of 845397800 is 8793548.

It is an interprime number because it is at equal distance from previous prime (845397797) and next prime (845397803).

It can be written as a sum of positive squares in 6 ways, for example, as 259660996 + 585736804 = 16114^2 + 24202^2 .

It is not an unprimeable number, because it can be changed into a prime (845397803) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 159977 + ... + 165176.

Almost surely, 2^845397800 is an apocalyptic number.

It is an amenable number.

845397800 is an abundant number, since it is smaller than the sum of its proper divisors (1271354740).

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

845397800 is a wasteful number, since it uses less digits than its factorization.

845397800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325182 (or 325173 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 44.

The square root of 845397800 is about 29075.7252704038. The cubic root of 845397800 is about 945.5555275298. Note that the first 4 decimals are identical.

The spelling of 845397800 in words is "eight hundred forty-five million, three hundred ninety-seven thousand, eight hundred".