8140390 has 16 divisors (see below), whose sum is σ = 15290208. Its totient is φ = 3114496.

The previous prime is 8140381. The next prime is 8140393. The reversal of 8140390 is 930418.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8140393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17467 + ... + 17926.

It is an arithmetic number, because the mean of its divisors is an integer number (955638).

Almost surely, 2^8140390 is an apocalyptic number.

8140390 is a deficient number, since it is larger than the sum of its proper divisors (7149818).

8140390 is a wasteful number, since it uses less digits than its factorization.

8140390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35423.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 8140390 is about 2853.1368701834. The cubic root of 8140390 is about 201.1631390906.

The spelling of 8140390 in words is "eight million, one hundred forty thousand, three hundred ninety".