4012090 has 8 divisors (see below), whose sum is σ = 7221780. Its totient is φ = 1604832.

The previous prime is 4012081. The next prime is 4012103. The reversal of 4012090 is 902104.

It can be written as a sum of positive squares in 2 ways, for example, as 4012009 + 81 = 2003^2 + 9^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 200595 + ... + 200614.

Almost surely, 2^4012090 is an apocalyptic number.

4012090 is a deficient number, since it is larger than the sum of its proper divisors (3209690).

4012090 is a wasteful number, since it uses less digits than its factorization.

4012090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401216.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 4012090 is about 2003.0202195684. The cubic root of 4012090 is about 158.8998749927.

Adding to 4012090 its reverse (902104), we get a palindrome (4914194).

The spelling of 4012090 in words is "four million, twelve thousand, ninety".