8143994 has 8 divisors (see below), whose sum is σ = 12514068. Its totient is φ = 3972640.

The previous prime is 8143987. The next prime is 8143997. The reversal of 8143994 is 4993418.

It can be written as a sum of positive squares in 2 ways, for example, as 6568969 + 1575025 = 2563^2 + 1255^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (8143997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49577 + ... + 49740.

Almost surely, 2^8143994 is an apocalyptic number.

8143994 is a deficient number, since it is larger than the sum of its proper divisors (4370074).

8143994 is a wasteful number, since it uses less digits than its factorization.

8143994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99360.

The product of its digits is 31104, while the sum is 38.

The square root of 8143994 is about 2853.7683858365. The cubic root of 8143994 is about 201.1928217384.

The spelling of 8143994 in words is "eight million, one hundred forty-three thousand, nine hundred ninety-four".