13870427 has 2 divisors, whose sum is σ = 13870428. Its totient is φ = 13870426.

The previous prime is 13870421. The next prime is 13870457. The reversal of 13870427 is 72407831.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (72407831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13870427 - 2¹⁰ = 13869403 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 13870393 and 13870402.

It is not a weakly prime, because it can be changed into another prime (13870421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6935213 + 6935214.

It is an arithmetic number, because the mean of its divisors is an integer number (6935214).

Almost surely, 2^13870427 is an apocalyptic number.

13870427 is a deficient number, since it is larger than the sum of its proper divisors (1).

13870427 is an equidigital number, since it uses as much as digits as its factorization.

13870427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 13870427 is about 3724.3022165233. The cubic root of 13870427 is about 240.2683745529.

The spelling of 13870427 in words is "thirteen million, eight hundred seventy thousand, four hundred twenty-seven".