843274890 has 36 divisors (see below), whose sum is σ = 2193231222. Its totient is φ = 224799840.

The previous prime is 843274879. The next prime is 843274981. The reversal of 843274890 is 98472348.

It can be written as a sum of positive squares in 3 ways, for example, as 834112161 + 9162729 = 28881^2 + 3027^2 .

It is a super-2 number, since 2×843274890² = 1422225080209024200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 273960 + ... + 277020.

Almost surely, 2^843274890 is an apocalyptic number.

843274890 is an abundant number, since it is smaller than the sum of its proper divisors (1349956332).

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

843274890 is an equidigital number, since it uses as much as digits as its factorization.

843274890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6135 (or 3071 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The square root of 843274890 is about 29039.1957533262. The cubic root of 843274890 is about 944.7633908341.

The spelling of 843274890 in words is "eight hundred forty-three million, two hundred seventy-four thousand, eight hundred ninety".