4002445 has 8 divisors (see below), whose sum is σ = 5055840. Its totient is φ = 3033360.

The previous prime is 4002431. The next prime is 4002457. The reversal of 4002445 is 5442004.

4002445 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4002445 - 2¹³ = 3994253 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20971 + ... + 21160.

It is an arithmetic number, because the mean of its divisors is an integer number (631980).

Almost surely, 2^4002445 is an apocalyptic number.

It is an amenable number.

4002445 is a deficient number, since it is larger than the sum of its proper divisors (1053395).

4002445 is a wasteful number, since it uses less digits than its factorization.

4002445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42155.

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 4002445 is about 2000.6111566219. The cubic root of 4002445 is about 158.7724419055.

Adding to 4002445 its reverse (5442004), we get a palindrome (9444449).

The spelling of 4002445 in words is "four million, two thousand, four hundred forty-five".