7890394 has 8 divisors (see below), whose sum is σ = 11946528. Its totient is φ = 3908220.

The previous prime is 7890391. The next prime is 7890413. The reversal of 7890394 is 4930987.

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

It is not an unprimeable number, because it can be changed into a prime (7890391) 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 3 ways as a sum of consecutive naturals, for example, 18222 + ... + 18649.

It is an arithmetic number, because the mean of its divisors is an integer number (1493316).

Almost surely, 2^7890394 is an apocalyptic number.

7890394 is a deficient number, since it is larger than the sum of its proper divisors (4056134).

7890394 is a wasteful number, since it uses less digits than its factorization.

7890394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36980.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 7890394 is about 2808.9845140193. The cubic root of 7890394 is about 199.0824132778.

The spelling of 7890394 in words is "seven million, eight hundred ninety thousand, three hundred ninety-four".