7229999 has 6 divisors (see below), whose sum is σ = 8410464. Its totient is φ = 6197100.

The previous prime is 7229969. The next prime is 7230023. The reversal of 7229999 is 9999227.

It is not a de Polignac number, because 7229999 - 2²⁰ = 6181423 is a prime.

It is a Duffinian number.

7229999 is a modest number, since divided by 9999 gives 722 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7229909) 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 5 ways as a sum of consecutive naturals, for example, 73727 + ... + 73824.

It is an arithmetic number, because the mean of its divisors is an integer number (1401744).

Almost surely, 2^7229999 is an apocalyptic number.

7229999 is a deficient number, since it is larger than the sum of its proper divisors (1180465).

7229999 is a wasteful number, since it uses less digits than its factorization.

7229999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147565 (or 147558 counting only the distinct ones).

The product of its digits is 183708, while the sum is 47.

The square root of 7229999 is about 2688.8657459977. The cubic root of 7229999 is about 193.3656878735.

It can be divided in two parts, 7229 and 999, that added together give a palindrome (8228).

The spelling of 7229999 in words is "seven million, two hundred twenty-nine thousand, nine hundred ninety-nine".