4056406 has 4 divisors (see below), whose sum is σ = 6084612. Its totient is φ = 2028202.

The previous prime is 4056389. The next prime is 4056407. The reversal of 4056406 is 6046504.

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 (4056407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1014100 + ... + 1014103.

It is an arithmetic number, because the mean of its divisors is an integer number (1521153).

Almost surely, 2^4056406 is an apocalyptic number.

4056406 is a deficient number, since it is larger than the sum of its proper divisors (2028206).

4056406 is a wasteful number, since it uses less digits than its factorization.

4056406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2028205.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 4056406 is about 2014.0521343798. The cubic root of 4056406 is about 159.4827829675.

The spelling of 4056406 in words is "four million, fifty-six thousand, four hundred six".