288940871 has 4 divisors (see below), whose sum is σ = 289332600. Its totient is φ = 288549144.

The previous prime is 288940859. The next prime is 288940889. The reversal of 288940871 is 178049882.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 178049882 = 2 ⋅89024941.

It is a cyclic number.

It is not a de Polignac number, because 288940871 - 2²⁶ = 221832007 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 (288940831) 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, 194756 + ... + 196233.

It is an arithmetic number, because the mean of its divisors is an integer number (72333150).

Almost surely, 2^288940871 is an apocalyptic number.

288940871 is a deficient number, since it is larger than the sum of its proper divisors (391729).

288940871 is an equidigital number, since it uses as much as digits as its factorization.

288940871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391728.

The product of its (nonzero) digits is 258048, while the sum is 47.

The square root of 288940871 is about 16998.2608228018. The cubic root of 288940871 is about 661.1038087202.

The spelling of 288940871 in words is "two hundred eighty-eight million, nine hundred forty thousand, eight hundred seventy-one".