4086390 has 128 divisors (see below), whose sum is σ = 12856320. Its totient is φ = 806400.

The previous prime is 4086377. The next prime is 4086403. The reversal of 4086390 is 936804.

It is an interprime number because it is at equal distance from previous prime (4086377) and next prime (4086403).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 66960 + ... + 67020.

It is an arithmetic number, because the mean of its divisors is an integer number (100440).

Almost surely, 2^4086390 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4086390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6428160).

4086390 is an abundant number, since it is smaller than the sum of its proper divisors (8769930).

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

4086390 is a wasteful number, since it uses less digits than its factorization.

4086390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 4086390 is about 2021.4821295277. The cubic root of 4086390 is about 159.8747718041.

The spelling of 4086390 in words is "four million, eighty-six thousand, three hundred ninety".