13973895 has 24 divisors (see below), whose sum is σ = 26085696. Its totient is φ = 6879168.

The previous prime is 13973891. The next prime is 13973929. The reversal of 13973895 is 59837931.

It is a happy number.

It is not a de Polignac number, because 13973895 - 2² = 13973891 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 13973895.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13973891) 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 in 23 ways as a sum of consecutive naturals, for example, 11359 + ... + 12528.

It is an arithmetic number, because the mean of its divisors is an integer number (1086904).

Almost surely, 2^13973895 is an apocalyptic number.

13973895 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13973895 is a deficient number, since it is larger than the sum of its proper divisors (12111801).

13973895 is a wasteful number, since it uses less digits than its factorization.

13973895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23911 (or 23908 counting only the distinct ones).

The product of its digits is 204120, while the sum is 45.

The square root of 13973895 is about 3738.1673317282. The cubic root of 13973895 is about 240.8643313934.

The spelling of 13973895 in words is "thirteen million, nine hundred seventy-three thousand, eight hundred ninety-five".