13967811 has 24 divisors (see below), whose sum is σ = 23705136. Its totient is φ = 7813440.

The previous prime is 13967809. The next prime is 13967813. The reversal of 13967811 is 11876931.

It is an interprime number because it is at equal distance from previous prime (13967809) and next prime (13967813).

It is not a de Polignac number, because 13967811 - 2¹ = 13967809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13967813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4140 + ... + 6713.

It is an arithmetic number, because the mean of its divisors is an integer number (987714).

Almost surely, 2^13967811 is an apocalyptic number.

13967811 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13967811 is a deficient number, since it is larger than the sum of its proper divisors (9737325).

13967811 is a wasteful number, since it uses less digits than its factorization.

13967811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10883 (or 10880 counting only the distinct ones).

The product of its digits is 9072, while the sum is 36.

The square root of 13967811 is about 3737.3534753887. The cubic root of 13967811 is about 240.8293702196.

The spelling of 13967811 in words is "thirteen million, nine hundred sixty-seven thousand, eight hundred eleven".