4239906 has 32 divisors (see below), whose sum is σ = 9324288. Its totient is φ = 1274640.

The previous prime is 4239881. The next prime is 4239923. The reversal of 4239906 is 6099324.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14841 + ... + 15123.

It is an arithmetic number, because the mean of its divisors is an integer number (291384).

Almost surely, 2^4239906 is an apocalyptic number.

4239906 is an abundant number, since it is smaller than the sum of its proper divisors (5084382).

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

4239906 is a wasteful number, since it uses less digits than its factorization.

4239906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526.

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 4239906 is about 2059.1032028531. The cubic root of 4239906 is about 161.8522505957.

The spelling of 4239906 in words is "four million, two hundred thirty-nine thousand, nine hundred six".