289220021893 has 8 divisors (see below), whose sum is σ = 315544736736. Its totient is φ = 262900638000.

The previous prime is 289220021869. The next prime is 289220021899. The reversal of 289220021893 is 398120022982.

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

It is a de Polignac number, because none of the positive numbers 2^k-289220021893 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 (289220021899) 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, 1218871 + ... + 1436692.

It is an arithmetic number, because the mean of its divisors is an integer number (39443092092).

Almost surely, 2^289220021893 is an apocalyptic number.

It is an amenable number.

289220021893 is a deficient number, since it is larger than the sum of its proper divisors (26324714843).

289220021893 is a wasteful number, since it uses less digits than its factorization.

289220021893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2665475.

The product of its (nonzero) digits is 248832, while the sum is 46.

The spelling of 289220021893 in words is "two hundred eighty-nine billion, two hundred twenty million, twenty-one thousand, eight hundred ninety-three".