4390215 has 12 divisors (see below), whose sum is σ = 7037352. Its totient is φ = 2337120.

The previous prime is 4390207. The next prime is 4390219. The reversal of 4390215 is 5120934.

It is not a de Polignac number, because 4390215 - 2³ = 4390207 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4390219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7845 + ... + 8385.

It is an arithmetic number, because the mean of its divisors is an integer number (586446).

Almost surely, 2^4390215 is an apocalyptic number.

4390215 is a deficient number, since it is larger than the sum of its proper divisors (2647137).

4390215 is an frugal number, since it uses more digits than its factorization.

4390215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1090 (or 549 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 4390215 is about 2095.2839902982. The cubic root of 4390215 is about 163.7426933787.

The spelling of 4390215 in words is "four million, three hundred ninety thousand, two hundred fifteen".