289131439897 has 8 divisors (see below), whose sum is σ = 291534566400. Its totient is φ = 286730290224.

The previous prime is 289131439867. The next prime is 289131439901. The reversal of 289131439897 is 798934131982.

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 289131439897 - 2²³ = 289123051289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (289131439867) 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, 199747 + ... + 786232.

It is an arithmetic number, because the mean of its divisors is an integer number (36441820800).

Almost surely, 2^289131439897 is an apocalyptic number.

It is an amenable number.

289131439897 is a deficient number, since it is larger than the sum of its proper divisors (2403126503).

289131439897 is a wasteful number, since it uses less digits than its factorization.

289131439897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 988415.

The product of its digits is 23514624, while the sum is 64.

It can be divided in two parts, 289131 and 439897, that added together give a triangular number (729028 = T₁₂₀₇).

The spelling of 289131439897 in words is "two hundred eighty-nine billion, one hundred thirty-one million, four hundred thirty-nine thousand, eight hundred ninety-seven".