11400871 has 4 divisors (see below), whose sum is σ = 11425752. Its totient is φ = 11375992.

The previous prime is 11400859. The next prime is 11400881. The reversal of 11400871 is 17800411.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11400871 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 (11400881) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11740 + ... + 12673.

It is an arithmetic number, because the mean of its divisors is an integer number (2856438).

Almost surely, 2^11400871 is an apocalyptic number.

11400871 is a deficient number, since it is larger than the sum of its proper divisors (24881).

11400871 is an equidigital number, since it uses as much as digits as its factorization.

11400871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24880.

The product of its (nonzero) digits is 224, while the sum is 22.

The square root of 11400871 is about 3376.5175847313. The cubic root of 11400871 is about 225.0674431566.

The spelling of 11400871 in words is "eleven million, four hundred thousand, eight hundred seventy-one".