8431940 has 24 divisors (see below), whose sum is σ = 19317312. Its totient is φ = 3066080.

The previous prime is 8431933. The next prime is 8431963. The reversal of 8431940 is 491348.

8431940 = 265² + 266² + ... + 352².

8431940 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×8431940² = 142195224327200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18944 + ... + 19383.

It is an arithmetic number, because the mean of its divisors is an integer number (804888).

Almost surely, 2^8431940 is an apocalyptic number.

It is an amenable number.

8431940 is an abundant number, since it is smaller than the sum of its proper divisors (10885372).

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

8431940 is a wasteful number, since it uses less digits than its factorization.

8431940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38347 (or 38345 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 8431940 is about 2903.7802947193. The cubic root of 8431940 is about 203.5365939017.

The spelling of 8431940 in words is "eight million, four hundred thirty-one thousand, nine hundred forty".