7917333421 has 8 divisors (see below), whose sum is σ = 8343754400. Its totient is φ = 7491884400.

The previous prime is 7917333379. The next prime is 7917333451. The reversal of 7917333421 is 1243337197.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7917333421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7917333451) 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, 226230 + ... + 258871.

It is an arithmetic number, because the mean of its divisors is an integer number (1042969300).

Almost surely, 2^7917333421 is an apocalyptic number.

It is an amenable number.

7917333421 is a deficient number, since it is larger than the sum of its proper divisors (426420979).

7917333421 is a wasteful number, since it uses less digits than its factorization.

7917333421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485979.

The product of its digits is 95256, while the sum is 40.

The square root of 7917333421 is about 88979.3988572636. The cubic root of 7917333421 is about 1993.0872529082.

The spelling of 7917333421 in words is "seven billion, nine hundred seventeen million, three hundred thirty-three thousand, four hundred twenty-one".