4442155 has 4 divisors (see below), whose sum is σ = 5330592. Its totient is φ = 3553720.

The previous prime is 4442131. The next prime is 4442159. The reversal of 4442155 is 5512444.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 4442155 - 2⁷ = 4442027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4442159) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 444211 + ... + 444220.

It is an arithmetic number, because the mean of its divisors is an integer number (1332648).

Almost surely, 2^4442155 is an apocalyptic number.

4442155 is a deficient number, since it is larger than the sum of its proper divisors (888437).

4442155 is an equidigital number, since it uses as much as digits as its factorization.

4442155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 888436.

The product of its digits is 3200, while the sum is 25.

The square root of 4442155 is about 2107.6420474075. The cubic root of 4442155 is about 164.3859021621.

Adding to 4442155 its reverse (5512444), we get a palindrome (9954599).

It can be divided in two parts, 44421 and 55, that multiplied together give a triangular number (2443155 = T₂₂₁₀).

The spelling of 4442155 in words is "four million, four hundred forty-two thousand, one hundred fifty-five".