13478927249 has 2 divisors, whose sum is σ = 13478927250. Its totient is φ = 13478927248.

The previous prime is 13478927233. The next prime is 13478927257. The reversal of 13478927249 is 94272987431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13324546624 + 154380625 = 115432^2 + 12425^2 .

It is a cyclic number.

It is not a de Polignac number, because 13478927249 - 2⁴ = 13478927233 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13478927194 and 13478927203.

It is not a weakly prime, because it can be changed into another prime (13478977249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6739463624 + 6739463625.

It is an arithmetic number, because the mean of its divisors is an integer number (6739463625).

Almost surely, 2^13478927249 is an apocalyptic number.

It is an amenable number.

13478927249 is a deficient number, since it is larger than the sum of its proper divisors (1).

13478927249 is an equidigital number, since it uses as much as digits as its factorization.

13478927249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6096384, while the sum is 56.

The spelling of 13478927249 in words is "thirteen billion, four hundred seventy-eight million, nine hundred twenty-seven thousand, two hundred forty-nine".