791716421 has 8 divisors (see below), whose sum is σ = 804024384. Its totient is φ = 779423040.

The previous prime is 791716411. The next prime is 791716423. The reversal of 791716421 is 124617197.

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

It is a cyclic number.

It is not a de Polignac number, because 791716421 - 2⁶ = 791716357 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 (791716423) 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 7 ways as a sum of consecutive naturals, for example, 165341 + ... + 170061.

It is an arithmetic number, because the mean of its divisors is an integer number (100503048).

Almost surely, 2^791716421 is an apocalyptic number.

It is an amenable number.

791716421 is a deficient number, since it is larger than the sum of its proper divisors (12307963).

791716421 is a wasteful number, since it uses less digits than its factorization.

791716421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7291.

The product of its digits is 21168, while the sum is 38.

The square root of 791716421 is about 28137.4558373709. The cubic root of 791716421 is about 925.1025631588.

The spelling of 791716421 in words is "seven hundred ninety-one million, seven hundred sixteen thousand, four hundred twenty-one".