79589850421 has 8 divisors (see below), whose sum is σ = 80785898424. Its totient is φ = 78401803200.

The previous prime is 79589850413. The next prime is 79589850493. The reversal of 79589850421 is 12405898597.

It can be written as a sum of positive squares in 4 ways, for example, as 52308721521 + 27281128900 = 228711^2 + 165170^2 .

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 79589850421 - 2³ = 79589850413 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 (79589820421) 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, 1980150 + ... + 2019943.

It is an arithmetic number, because the mean of its divisors is an integer number (10098237303).

Almost surely, 2^79589850421 is an apocalyptic number.

It is an amenable number.

79589850421 is a deficient number, since it is larger than the sum of its proper divisors (1196048003).

79589850421 is a wasteful number, since it uses less digits than its factorization.

79589850421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4000391.

The product of its (nonzero) digits is 7257600, while the sum is 58.

The spelling of 79589850421 in words is "seventy-nine billion, five hundred eighty-nine million, eight hundred fifty thousand, four hundred twenty-one".