13917943 has 8 divisors (see below), whose sum is σ = 15235136. Its totient is φ = 12636000.

The previous prime is 13917907. The next prime is 13917949. The reversal of 13917943 is 34971931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13917943 - 2¹³ = 13909751 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13917949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7983 + ... + 9568.

It is an arithmetic number, because the mean of its divisors is an integer number (1904392).

Almost surely, 2^13917943 is an apocalyptic number.

13917943 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

13917943 is a deficient number, since it is larger than the sum of its proper divisors (1317193).

13917943 is a wasteful number, since it uses less digits than its factorization.

13917943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17625.

The product of its digits is 20412, while the sum is 37.

The square root of 13917943 is about 3730.6759441152. The cubic root of 13917943 is about 240.5424247609.

The spelling of 13917943 in words is "thirteen million, nine hundred seventeen thousand, nine hundred forty-three".