13490398549 has 4 divisors (see below), whose sum is σ = 13490634240. Its totient is φ = 13490162860.

The previous prime is 13490398543. The next prime is 13490398561. The reversal of 13490398549 is 94589309431.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13490398549 - 2⁵ = 13490398517 is a prime.

It is a super-2 number, since 2×13490398549² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13490398549.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13490398543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29034 + ... + 166804.

It is an arithmetic number, because the mean of its divisors is an integer number (3372658560).

Almost surely, 2^13490398549 is an apocalyptic number.

It is an amenable number.

13490398549 is a deficient number, since it is larger than the sum of its proper divisors (235691).

13490398549 is an equidigital number, since it uses as much as digits as its factorization.

13490398549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235690.

The product of its (nonzero) digits is 4199040, while the sum is 55.

The spelling of 13490398549 in words is "thirteen billion, four hundred ninety million, three hundred ninety-eight thousand, five hundred forty-nine".