13419998729 has 4 divisors (see below), whose sum is σ = 13420695876. Its totient is φ = 13419301584.

The previous prime is 13419998723. The next prime is 13419998741. The reversal of 13419998729 is 92789991431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 92789991431 = 709 ⋅130874459.

It can be written as a sum of positive squares in 2 ways, for example, as 7014397504 + 6405601225 = 83752^2 + 80035^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13419998729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13419998723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 318854 + ... + 358479.

It is an arithmetic number, because the mean of its divisors is an integer number (3355173969).

Almost surely, 2^13419998729 is an apocalyptic number.

It is an amenable number.

13419998729 is a deficient number, since it is larger than the sum of its proper divisors (697147).

13419998729 is an equidigital number, since it uses as much as digits as its factorization.

13419998729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 697146.

The product of its digits is 8817984, while the sum is 62.

The spelling of 13419998729 in words is "thirteen billion, four hundred nineteen million, nine hundred ninety-eight thousand, seven hundred twenty-nine".