13896446977 has 4 divisors (see below), whose sum is σ = 15881653696. Its totient is φ = 11911240260.

The previous prime is 13896446947. The next prime is 13896447001. The reversal of 13896446977 is 77964469831.

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 a de Polignac number, because none of the positive numbers 2^k-13896446977 is a prime.

It is a super-2 number, since 2×13896446977² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13896446947) 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, 992603349 + ... + 992603362.

It is an arithmetic number, because the mean of its divisors is an integer number (3970413424).

Almost surely, 2^13896446977 is an apocalyptic number.

It is an amenable number.

13896446977 is a deficient number, since it is larger than the sum of its proper divisors (1985206719).

13896446977 is an equidigital number, since it uses as much as digits as its factorization.

13896446977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1985206718.

The product of its digits is 54867456, while the sum is 64.

The spelling of 13896446977 in words is "thirteen billion, eight hundred ninety-six million, four hundred forty-six thousand, nine hundred seventy-seven".