7922906 has 4 divisors (see below), whose sum is σ = 11884362. Its totient is φ = 3961452.

The previous prime is 7922903. The next prime is 7922911. The reversal of 7922906 is 6092297.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 7789681 + 133225 = 2791^2 + 365^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7922903) 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 as a sum of consecutive naturals, namely, 1980725 + ... + 1980728.

Almost surely, 2^7922906 is an apocalyptic number.

7922906 is a deficient number, since it is larger than the sum of its proper divisors (3961456).

7922906 is a wasteful number, since it uses less digits than its factorization.

7922906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3961455.

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

The square root of 7922906 is about 2814.7657096107. The cubic root of 7922906 is about 199.3554751699.

Subtracting from 7922906 its reverse (6092297), we obtain a square (1830609 = 1353²).

The spelling of 7922906 in words is "seven million, nine hundred twenty-two thousand, nine hundred six".