3999650 has 24 divisors (see below), whose sum is σ = 7499520. Its totient is φ = 1586960.

The previous prime is 3999647. The next prime is 3999659. The reversal of 3999650 is 569993.

It is a happy number.

3999650 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 3999598 and 3999607.

It is not an unprimeable number, because it can be changed into a prime (3999659) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 8111 + ... + 8589.

It is an arithmetic number, because the mean of its divisors is an integer number (312480).

Almost surely, 2^3999650 is an apocalyptic number.

3999650 is a deficient number, since it is larger than the sum of its proper divisors (3499870).

3999650 is a wasteful number, since it uses less digits than its factorization.

3999650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 658 (or 653 counting only the distinct ones).

The product of its (nonzero) digits is 65610, while the sum is 41.

The square root of 3999650 is about 1999.9124980859. The cubic root of 3999650 is about 158.7354751420.

The spelling of 3999650 in words is "three million, nine hundred ninety-nine thousand, six hundred fifty".