7772249 has 4 divisors (see below), whose sum is σ = 7937664. Its totient is φ = 7606836.

The previous prime is 7772221. The next prime is 7772251. The reversal of 7772249 is 9422777.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 7772249 - 2⁸ = 7771993 is a prime.

It is a Duffinian number.

It is a Curzon number.

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 3 ways as a sum of consecutive naturals, for example, 82637 + ... + 82730.

It is an arithmetic number, because the mean of its divisors is an integer number (1984416).

Almost surely, 2^7772249 is an apocalyptic number.

It is an amenable number.

7772249 is a deficient number, since it is larger than the sum of its proper divisors (165415).

7772249 is a wasteful number, since it uses less digits than its factorization.

7772249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165414.

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

The square root of 7772249 is about 2787.8753558938. The cubic root of 7772249 is about 198.0837740253.

The spelling of 7772249 in words is "seven million, seven hundred seventy-two thousand, two hundred forty-nine".