13896446947 has 2 divisors, whose sum is σ = 13896446948. Its totient is φ = 13896446946.

The previous prime is 13896446897. The next prime is 13896447001. The reversal of 13896446947 is 74964469831.

It is a weak prime.

It is an emirp because it is prime and its reverse (74964469831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13896446947 - 2²³ = 13888058339 is a prime.

It is a super-2 number, since 2×13896446947² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13896446147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6948223473 + 6948223474.

It is an arithmetic number, because the mean of its divisors is an integer number (6948223474).

Almost surely, 2^13896446947 is an apocalyptic number.

13896446947 is a deficient number, since it is larger than the sum of its proper divisors (1).

13896446947 is an equidigital number, since it uses as much as digits as its factorization.

13896446947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31352832, while the sum is 61.

The spelling of 13896446947 in words is "thirteen billion, eight hundred ninety-six million, four hundred forty-six thousand, nine hundred forty-seven".