3926406 has 32 divisors (see below), whose sum is σ = 8781696. Its totient is φ = 1160000.

The previous prime is 3926357. The next prime is 3926423. The reversal of 3926406 is 6046293.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1981 + ... + 3431.

It is an arithmetic number, because the mean of its divisors is an integer number (274428).

Almost surely, 2^3926406 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3926406, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4390848).

3926406 is an abundant number, since it is smaller than the sum of its proper divisors (4855290).

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

3926406 is a wasteful number, since it uses less digits than its factorization.

3926406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1508.

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 3926406 is about 1981.5160862330. The cubic root of 3926406 is about 157.7605463266.

It can be divided in two parts, 392 and 6406, that multiplied together give a palindrome (2511152).

The spelling of 3926406 in words is "three million, nine hundred twenty-six thousand, four hundred six".