13840871 has 16 divisors (see below), whose sum is σ = 15890688. Its totient is φ = 11932800.

The previous prime is 13840867. The next prime is 13840877. The reversal of 13840871 is 17804831.

It is not a de Polignac number, because 13840871 - 2² = 13840867 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13840877) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57311 + ... + 57551.

It is an arithmetic number, because the mean of its divisors is an integer number (993168).

Almost surely, 2^13840871 is an apocalyptic number.

13840871 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13840871 is a deficient number, since it is larger than the sum of its proper divisors (2049817).

13840871 is a wasteful number, since it uses less digits than its factorization.

13840871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502.

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 13840871 is about 3720.3321088311. The cubic root of 13840871 is about 240.0975934112.

The spelling of 13840871 in words is "thirteen million, eight hundred forty thousand, eight hundred seventy-one".