7977244 has 12 divisors (see below), whose sum is σ = 15229368. Its totient is φ = 3626000.

The previous prime is 7977241. The next prime is 7977253. The reversal of 7977244 is 4427797.

It is a junction number, because it is equal to n+sod(n) for n = 7977197 and 7977206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7977241) 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, 90607 + ... + 90694.

It is an arithmetic number, because the mean of its divisors is an integer number (1269114).

Almost surely, 2^7977244 is an apocalyptic number.

It is an amenable number.

7977244 is a deficient number, since it is larger than the sum of its proper divisors (7252124).

7977244 is a wasteful number, since it uses less digits than its factorization.

7977244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181316 (or 181314 counting only the distinct ones).

The product of its digits is 98784, while the sum is 40.

The square root of 7977244 is about 2824.4015295280. The cubic root of 7977244 is about 199.8101865780.

The spelling of 7977244 in words is "seven million, nine hundred seventy-seven thousand, two hundred forty-four".