4155444 has 18 divisors (see below), whose sum is σ = 10504130. Its totient is φ = 1385136.

The previous prime is 4155427. The next prime is 4155467. The reversal of 4155444 is 4445514.

It can be written as a sum of positive squares in only one way, i.e., 3027600 + 1127844 = 1740^2 + 1062^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 57679 + ... + 57750.

Almost surely, 2^4155444 is an apocalyptic number.

It is an amenable number.

4155444 is an abundant number, since it is smaller than the sum of its proper divisors (6348686).

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

4155444 is a wasteful number, since it uses less digits than its factorization.

4155444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115439 (or 115434 counting only the distinct ones).

The product of its digits is 6400, while the sum is 27.

The square root of 4155444 is about 2038.4906180800. The cubic root of 4155444 is about 160.7702959909.

The spelling of 4155444 in words is "four million, one hundred fifty-five thousand, four hundred forty-four".