4086090 has 48 divisors (see below), whose sum is σ = 10771488. Its totient is φ = 1074528.

The previous prime is 4086073. The next prime is 4086091. The reversal of 4086090 is 906804.

4086090 = 902² + 903² + ... + 906².

It is a super-2 number, since 2×4086090² = 33392262976200, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4086091) 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, 7197 + ... + 7743.

It is an arithmetic number, because the mean of its divisors is an integer number (224406).

Almost surely, 2^4086090 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4086090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5385744).

4086090 is an abundant number, since it is smaller than the sum of its proper divisors (6685398).

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

4086090 is a wasteful number, since it uses less digits than its factorization.

4086090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643 (or 640 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 4086090 is about 2021.4079251848. The cubic root of 4086090 is about 159.8708593365.

The spelling of 4086090 in words is "four million, eighty-six thousand, ninety".