7921394 has 16 divisors (see below), whose sum is σ = 12868800. Its totient is φ = 3635280.

The previous prime is 7921391. The next prime is 7921411. The reversal of 7921394 is 4931297.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (7921391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4409 + ... + 5939.

It is an arithmetic number, because the mean of its divisors is an integer number (804300).

Almost surely, 2^7921394 is an apocalyptic number.

7921394 is a deficient number, since it is larger than the sum of its proper divisors (4947406).

7921394 is a wasteful number, since it uses less digits than its factorization.

7921394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1745.

The product of its digits is 13608, while the sum is 35.

The square root of 7921394 is about 2814.4971131625. The cubic root of 7921394 is about 199.3427927587.

The spelling of 7921394 in words is "seven million, nine hundred twenty-one thousand, three hundred ninety-four".