4023994 has 8 divisors (see below), whose sum is σ = 6500340. Its totient is φ = 1857216.

The previous prime is 4023973. The next prime is 4023997. The reversal of 4023994 is 4993204.

It can be written as a sum of positive squares in 2 ways, for example, as 4020025 + 3969 = 2005^2 + 63^2 .

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 (4023997) 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, 77359 + ... + 77410.

Almost surely, 2^4023994 is an apocalyptic number.

4023994 is a deficient number, since it is larger than the sum of its proper divisors (2476346).

4023994 is a wasteful number, since it uses less digits than its factorization.

4023994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154784.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 4023994 is about 2005.9895313785. The cubic root of 4023994 is about 159.0568735007.

The spelling of 4023994 in words is "four million, twenty-three thousand, nine hundred ninety-four".