13823971 has 8 divisors (see below), whose sum is σ = 15956064. Its totient is φ = 11731200.

The previous prime is 13823959. The next prime is 13823987. The reversal of 13823971 is 17932831.

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

It is a cyclic number.

It is not a de Polignac number, because 13823971 - 2¹³ = 13815779 is a prime.

It is a super-2 number, since 2×13823971² = 382204348417682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13823921) 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, 9070 + ... + 10483.

It is an arithmetic number, because the mean of its divisors is an integer number (1994508).

Almost surely, 2^13823971 is an apocalyptic number.

13823971 is a deficient number, since it is larger than the sum of its proper divisors (2132093).

13823971 is a wasteful number, since it uses less digits than its factorization.

13823971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19661.

The product of its digits is 9072, while the sum is 34.

The square root of 13823971 is about 3718.0601124780. The cubic root of 13823971 is about 239.9998321758. Note that the first 3 decimals are identical.

The spelling of 13823971 in words is "thirteen million, eight hundred twenty-three thousand, nine hundred seventy-one".