7772289 has 16 divisors (see below), whose sum is σ = 12226560. Its totient is φ = 4297680.

The previous prime is 7772279. The next prime is 7772309. The reversal of 7772289 is 9822777.

It is not a de Polignac number, because 7772289 - 2¹² = 7768193 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7772289.

It is not an unprimeable number, because it can be changed into a prime (7772209) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5319 + ... + 6620.

It is an arithmetic number, because the mean of its divisors is an integer number (764160).

Almost surely, 2^7772289 is an apocalyptic number.

It is an amenable number.

7772289 is a deficient number, since it is larger than the sum of its proper divisors (4454271).

7772289 is a wasteful number, since it uses less digits than its factorization.

7772289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11980.

The product of its digits is 98784, while the sum is 42.

The square root of 7772289 is about 2787.8825298064. The cubic root of 7772289 is about 198.0841138385.

The spelling of 7772289 in words is "seven million, seven hundred seventy-two thousand, two hundred eighty-nine".