3999734 has 4 divisors (see below), whose sum is σ = 5999604. Its totient is φ = 1999866.

The previous prime is 3999733. The next prime is 3999739. The reversal of 3999734 is 4379993.

It is a happy number.

It is a semiprime because it is the product of two primes.

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 as a sum of consecutive naturals, namely, 999932 + ... + 999935.

It is an arithmetic number, because the mean of its divisors is an integer number (1499901).

Almost surely, 2^3999734 is an apocalyptic number.

3999734 is a deficient number, since it is larger than the sum of its proper divisors (1999870).

3999734 is a wasteful number, since it uses less digits than its factorization.

3999734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1999869.

The product of its digits is 183708, while the sum is 44.

The square root of 3999734 is about 1999.9334988944. The cubic root of 3999734 is about 158.7365863798.

The spelling of 3999734 in words is "three million, nine hundred ninety-nine thousand, seven hundred thirty-four".