3999735 has 12 divisors (see below), whose sum is σ = 6932952. Its totient is φ = 2133168.

The previous prime is 3999733. The next prime is 3999739. The reversal of 3999735 is 5379993.

It is not a de Polignac number, because 3999735 - 2¹ = 3999733 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 88883 = 3999735 / (3 + 9 + 9 + 9 + 7 + 3 + 5).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3999733) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44397 + ... + 44486.

It is an arithmetic number, because the mean of its divisors is an integer number (577746).

Almost surely, 2^3999735 is an apocalyptic number.

3999735 is a deficient number, since it is larger than the sum of its proper divisors (2933217).

3999735 is a wasteful number, since it uses less digits than its factorization.

3999735 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88894 (or 88891 counting only the distinct ones).

The product of its digits is 229635, while the sum is 45.

The square root of 3999735 is about 1999.9337489027. The cubic root of 3999735 is about 158.7365996087.

The spelling of 3999735 in words is "three million, nine hundred ninety-nine thousand, seven hundred thirty-five".