4399155 has 24 divisors (see below), whose sum is σ = 7890480. Its totient is φ = 2264640.

The previous prime is 4399147. The next prime is 4399163. The reversal of 4399155 is 5519934.

It is an interprime number because it is at equal distance from previous prime (4399147) and next prime (4399163).

It is not a de Polignac number, because 4399155 - 2³ = 4399147 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 381 + ... + 2990.

It is an arithmetic number, because the mean of its divisors is an integer number (328770).

Almost surely, 2^4399155 is an apocalyptic number.

4399155 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

4399155 is a deficient number, since it is larger than the sum of its proper divisors (3491325).

4399155 is a wasteful number, since it uses less digits than its factorization.

4399155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3411 (or 3408 counting only the distinct ones).

The product of its digits is 24300, while the sum is 36.

The square root of 4399155 is about 2097.4162676970. The cubic root of 4399155 is about 163.8537636535.

It can be divided in two parts, 4399 and 155, that added together give a palindrome (4554).

The spelling of 4399155 in words is "four million, three hundred ninety-nine thousand, one hundred fifty-five".