3999834 has 16 divisors (see below), whose sum is σ = 8888640. Its totient is φ = 1333260.

The previous prime is 3999803. The next prime is 3999851. The reversal of 3999834 is 4389993.

It is an Ulam number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 3999834.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36982 + ... + 37089.

It is an arithmetic number, because the mean of its divisors is an integer number (555540).

Almost surely, 2^3999834 is an apocalyptic number.

3999834 is an abundant number, since it is smaller than the sum of its proper divisors (4888806).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3999834 is a wasteful number, since it uses less digits than its factorization.

3999834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74082 (or 74076 counting only the distinct ones).

The product of its digits is 209952, while the sum is 45.

The square root of 3999834 is about 1999.9584995694. The cubic root of 3999834 is about 158.7379092617.

The spelling of 3999834 in words is "three million, nine hundred ninety-nine thousand, eight hundred thirty-four".