3861090 has 24 divisors (see below), whose sum is σ = 10039068. Its totient is φ = 1029600.

The previous prime is 3861083. The next prime is 3861113. The reversal of 3861090 is 901683.

It can be written as a sum of positive squares in 2 ways, for example, as 3837681 + 23409 = 1959^2 + 153^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21361 + ... + 21540.

Almost surely, 2^3861090 is an apocalyptic number.

3861090 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3861090 is an abundant number, since it is smaller than the sum of its proper divisors (6177978).

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

3861090 is a wasteful number, since it uses less digits than its factorization.

3861090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42914 (or 42911 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 3861090 is about 1964.9656485547. The cubic root of 3861090 is about 156.8808648993.

The spelling of 3861090 in words is "three million, eight hundred sixty-one thousand, ninety".