7722249 has 8 divisors (see below), whose sum is σ = 10315872. Its totient is φ = 5138400.

The previous prime is 7722229. The next prime is 7722251. The reversal of 7722249 is 9422277.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7722249 - 2⁵ = 7722217 is a prime.

7722249 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (7722229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 339 + ... + 3944.

It is an arithmetic number, because the mean of its divisors is an integer number (1289484).

Almost surely, 2^7722249 is an apocalyptic number.

It is an amenable number.

7722249 is a deficient number, since it is larger than the sum of its proper divisors (2593623).

7722249 is a wasteful number, since it uses less digits than its factorization.

7722249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4887.

The product of its digits is 14112, while the sum is 33.

The square root of 7722249 is about 2778.8934848245. The cubic root of 7722249 is about 197.6580927203.

The spelling of 7722249 in words is "seven million, seven hundred twenty-two thousand, two hundred forty-nine".