8143406 has 4 divisors (see below), whose sum is σ = 12215112. Its totient is φ = 4071702.

The previous prime is 8143351. The next prime is 8143427. The reversal of 8143406 is 6043418.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×8143406² = 132630122561672, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2035850 + ... + 2035853.

It is an arithmetic number, because the mean of its divisors is an integer number (3053778).

Almost surely, 2^8143406 is an apocalyptic number.

8143406 is a deficient number, since it is larger than the sum of its proper divisors (4071706).

8143406 is a wasteful number, since it uses less digits than its factorization.

8143406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4071705.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 8143406 is about 2853.6653623016. The cubic root of 8143406 is about 201.1879795513.

The spelling of 8143406 in words is "eight million, one hundred forty-three thousand, four hundred six".