79839588469 has 2 divisors, whose sum is σ = 79839588470. Its totient is φ = 79839588468.

The previous prime is 79839588463. The next prime is 79839588487. The reversal of 79839588469 is 96488593897.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74685784369 + 5153804100 = 273287^2 + 71790^2 .

It is a cyclic number.

It is not a de Polignac number, because 79839588469 - 2³ = 79839588461 is a prime.

It is a super-2 number, since 2×79839588469² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 79839588395 and 79839588404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79839588461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39919794234 + 39919794235.

It is an arithmetic number, because the mean of its divisors is an integer number (39919794235).

Almost surely, 2^79839588469 is an apocalyptic number.

It is an amenable number.

79839588469 is a deficient number, since it is larger than the sum of its proper divisors (1).

79839588469 is an equidigital number, since it uses as much as digits as its factorization.

79839588469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 940584960, while the sum is 76.

The spelling of 79839588469 in words is "seventy-nine billion, eight hundred thirty-nine million, five hundred eighty-eight thousand, four hundred sixty-nine".