7229399 has 4 divisors (see below), whose sum is σ = 7383264. Its totient is φ = 7075536.

The previous prime is 7229377. The next prime is 7229419. The reversal of 7229399 is 9939227.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9939227 = 79 ⋅125813.

It is a cyclic number.

It is not a de Polignac number, because 7229399 - 2⁸ = 7229143 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7228399) 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, 76862 + ... + 76955.

It is an arithmetic number, because the mean of its divisors is an integer number (1845816).

Almost surely, 2^7229399 is an apocalyptic number.

7229399 is a deficient number, since it is larger than the sum of its proper divisors (153865).

7229399 is a wasteful number, since it uses less digits than its factorization.

7229399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153864.

The product of its digits is 61236, while the sum is 41.

The square root of 7229399 is about 2688.7541724747. The cubic root of 7229399 is about 193.3603387431.

The spelling of 7229399 in words is "seven million, two hundred twenty-nine thousand, three hundred ninety-nine".