3999950 has 12 divisors (see below), whose sum is σ = 7440000. Its totient is φ = 1599960.

The previous prime is 3999949. The next prime is 3999971. The reversal of 3999950 is 599993.

3999950 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 in 5 ways as a sum of consecutive naturals, for example, 39950 + ... + 40049.

It is an arithmetic number, because the mean of its divisors is an integer number (620000).

Almost surely, 2^3999950 is an apocalyptic number.

3999950 is a deficient number, since it is larger than the sum of its proper divisors (3440050).

3999950 is a wasteful number, since it uses less digits than its factorization.

3999950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80011 (or 80006 counting only the distinct ones).

The product of its (nonzero) digits is 98415, while the sum is 44.

The square root of 3999950 is about 1999.9874999609. The cubic root of 3999950 is about 158.7394437770.

The spelling of 3999950 in words is "three million, nine hundred ninety-nine thousand, nine hundred fifty".