7217427398 has 8 divisors (see below), whose sum is σ = 10882823040. Its totient is φ = 3589819720.

The previous prime is 7217427383. The next prime is 7217427449. The reversal of 7217427398 is 8937247127.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9446513 + ... + 9447276.

It is an arithmetic number, because the mean of its divisors is an integer number (1360352880).

Almost surely, 2^7217427398 is an apocalyptic number.

7217427398 is a deficient number, since it is larger than the sum of its proper divisors (3665395642).

7217427398 is a wasteful number, since it uses less digits than its factorization.

7217427398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18893982.

The product of its digits is 1185408, while the sum is 50.

The square root of 7217427398 is about 84955.4436042800. The cubic root of 7217427398 is about 1932.5354738781.

The spelling of 7217427398 in words is "seven billion, two hundred seventeen million, four hundred twenty-seven thousand, three hundred ninety-eight".