4055646 has 32 divisors (see below), whose sum is σ = 9427968. Its totient is φ = 1139040.

The previous prime is 4055633. The next prime is 4055647. The reversal of 4055646 is 6465504.

4055646 = T₃₈ + T₃₉ + ... + T₂₈₉.

4055646 is nontrivially palindromic in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4055647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1771 + ... + 3353.

It is an arithmetic number, because the mean of its divisors is an integer number (294624).

Almost surely, 2^4055646 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4055646, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4713984).

4055646 is an abundant number, since it is smaller than the sum of its proper divisors (5372322).

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

4055646 is a wasteful number, since it uses less digits than its factorization.

4055646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1656.

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 4055646 is about 2013.8634511803. The cubic root of 4055646 is about 159.4728222218.

The spelling of 4055646 in words is "four million, fifty-five thousand, six hundred forty-six".