7206399 has 6 divisors (see below), whose sum is σ = 10409256. Its totient is φ = 4804260.

The previous prime is 7206391. The next prime is 7206403. The reversal of 7206399 is 9936027.

It is not a de Polignac number, because 7206399 - 2³ = 7206391 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7206391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 400347 + ... + 400364.

It is an arithmetic number, because the mean of its divisors is an integer number (1734876).

Almost surely, 2^7206399 is an apocalyptic number.

7206399 is a deficient number, since it is larger than the sum of its proper divisors (3202857).

7206399 is a wasteful number, since it uses less digits than its factorization.

7206399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 800717 (or 800714 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 36.

The square root of 7206399 is about 2684.4736914338. The cubic root of 7206399 is about 193.1550652285.

The spelling of 7206399 in words is "seven million, two hundred six thousand, three hundred ninety-nine".