7977422 has 16 divisors (see below), whose sum is σ = 12480720. Its totient is φ = 3820608.

The previous prime is 7977353. The next prime is 7977433. The reversal of 7977422 is 2247797.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4154 + ... + 5762.

It is an arithmetic number, because the mean of its divisors is an integer number (780045).

Almost surely, 2^7977422 is an apocalyptic number.

7977422 is a deficient number, since it is larger than the sum of its proper divisors (4503298).

7977422 is a wasteful number, since it uses less digits than its factorization.

7977422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1715.

The product of its digits is 49392, while the sum is 38.

The square root of 7977422 is about 2824.4330404525. The cubic root of 7977422 is about 199.8116727198.

The spelling of 7977422 in words is "seven million, nine hundred seventy-seven thousand, four hundred twenty-two".