3999434 has 16 divisors (see below), whose sum is σ = 6241536. Its totient is φ = 1920000.

The previous prime is 3999421. The next prime is 3999439. The reversal of 3999434 is 4349993.

It is a happy number.

3999434 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 3999391 and 3999400.

It is not an unprimeable number, because it can be changed into a prime (3999439) 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 7 ways as a sum of consecutive naturals, for example, 15434 + ... + 15690.

It is an arithmetic number, because the mean of its divisors is an integer number (390096).

Almost surely, 2^3999434 is an apocalyptic number.

3999434 is a deficient number, since it is larger than the sum of its proper divisors (2242102).

3999434 is a wasteful number, since it uses less digits than its factorization.

3999434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541.

The product of its digits is 104976, while the sum is 41.

The square root of 3999434 is about 1999.8584949941. The cubic root of 3999434 is about 158.7326176020.

The spelling of 3999434 in words is "three million, nine hundred ninety-nine thousand, four hundred thirty-four".