3999023 has 8 divisors (see below), whose sum is σ = 4626048. Its totient is φ = 3385944.

The previous prime is 3999001. The next prime is 3999053. The reversal of 3999023 is 3209993.

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

It is a cyclic number.

It is not a de Polignac number, because 3999023 - 2⁶ = 3998959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3999053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2861 + ... + 4022.

It is an arithmetic number, because the mean of its divisors is an integer number (578256).

Almost surely, 2^3999023 is an apocalyptic number.

3999023 is a deficient number, since it is larger than the sum of its proper divisors (627025).

3999023 is an equidigital number, since it uses as much as digits as its factorization.

3999023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6973.

The product of its (nonzero) digits is 13122, while the sum is 35.

The square root of 3999023 is about 1999.7557350837. The cubic root of 3999023 is about 158.7271800542.

The spelling of 3999023 in words is "three million, nine hundred ninety-nine thousand, twenty-three".