4091290 has 32 divisors (see below), whose sum is σ = 8486784. Its totient is φ = 1391040.

The previous prime is 4091281. The next prime is 4091293. The reversal of 4091290 is 921904.

It is not an unprimeable number, because it can be changed into a prime (4091293) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14632 + ... + 14908.

It is an arithmetic number, because the mean of its divisors is an integer number (265212).

Almost surely, 2^4091290 is an apocalyptic number.

4091290 is an abundant number, since it is smaller than the sum of its proper divisors (4395494).

4091290 is a wasteful number, since it uses less digits than its factorization.

4091290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 4091290 is about 2022.6937484454. The cubic root of 4091290 is about 159.9386483529.

The spelling of 4091290 in words is "four million, ninety-one thousand, two hundred ninety".