13870049 has 2 divisors, whose sum is σ = 13870050. Its totient is φ = 13870048.

The previous prime is 13870039. The next prime is 13870061. The reversal of 13870049 is 94007831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12909649 + 960400 = 3593^2 + 980^2 .

It is a cyclic number.

It is not a de Polignac number, because 13870049 - 2¹⁶ = 13804513 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13869997 and 13870024.

It is not a weakly prime, because it can be changed into another prime (13870039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6935024 + 6935025.

It is an arithmetic number, because the mean of its divisors is an integer number (6935025).

Almost surely, 2^13870049 is an apocalyptic number.

It is an amenable number.

13870049 is a deficient number, since it is larger than the sum of its proper divisors (1).

13870049 is an equidigital number, since it uses as much as digits as its factorization.

13870049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 13870049 is about 3724.2514684162. The cubic root of 13870049 is about 240.2661919171.

The spelling of 13870049 in words is "thirteen million, eight hundred seventy thousand, forty-nine".