843400038 has 16 divisors (see below), whose sum is σ = 1816554096. Its totient is φ = 259507680.

The previous prime is 843400027. The next prime is 843400057. The reversal of 843400038 is 830004348.

It is a super-2 number, since 2×843400038² = 1422647248196802888, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 843399978 and 843400014.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 5406333 + ... + 5406488.

It is an arithmetic number, because the mean of its divisors is an integer number (113534631).

Almost surely, 2^843400038 is an apocalyptic number.

843400038 is an abundant number, since it is smaller than the sum of its proper divisors (973154058).

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

843400038 is a wasteful number, since it uses less digits than its factorization.

843400038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10812839.

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 843400038 is about 29041.3504851272. The cubic root of 843400038 is about 944.8101250611.

The spelling of 843400038 in words is "eight hundred forty-three million, four hundred thousand, thirty-eight".