4395690 has 108 divisors (see below), whose sum is σ = 13146354. Its totient is φ = 1018368.

The previous prime is 4395689. The next prime is 4395697. The reversal of 4395690 is 965934.

It can be written as a sum of positive squares in 9 ways, for example, as 221841 + 4173849 = 471^2 + 2043^2 .

It is a super-2 number, since 2×4395690² = 38644181152200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4395697) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 258562 + ... + 258578.

Almost surely, 2^4395690 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4395690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6573177).

4395690 is an abundant number, since it is smaller than the sum of its proper divisors (8750664).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4395690 is a wasteful number, since it uses less digits than its factorization.

4395690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73 (or 40 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 36.

The square root of 4395690 is about 2096.5900886916. The cubic root of 4395690 is about 163.8107324789.

Multiplying 4395690 by its product of nonzero digits (29160), we get a square (128178320400 = 358020²).

The spelling of 4395690 in words is "four million, three hundred ninety-five thousand, six hundred ninety".