4002775 has 24 divisors (see below), whose sum is σ = 5758560. Its totient is φ = 2703360.

The previous prime is 4002773. The next prime is 4002797. The reversal of 4002775 is 5772004.

It is not a de Polignac number, because 4002775 - 2¹ = 4002773 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

4002775 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4002773) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15447 + ... + 15703.

It is an arithmetic number, because the mean of its divisors is an integer number (239940).

Almost surely, 2^4002775 is an apocalyptic number.

4002775 is a deficient number, since it is larger than the sum of its proper divisors (1755785).

4002775 is a wasteful number, since it uses less digits than its factorization.

4002775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363 (or 358 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 25.

The square root of 4002775 is about 2000.6936297195. The cubic root of 4002775 is about 158.7768053605.

Adding to 4002775 its reverse (5772004), we get a palindrome (9774779).

The spelling of 4002775 in words is "four million, two thousand, seven hundred seventy-five".