289914487 has 4 divisors (see below), whose sum is σ = 290056680. Its totient is φ = 289772296.

The previous prime is 289914451. The next prime is 289914503. The reversal of 289914487 is 784419982.

It is a happy number.

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-289914487 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 (289918487) 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, 67993 + ... + 72130.

It is an arithmetic number, because the mean of its divisors is an integer number (72514170).

Almost surely, 2^289914487 is an apocalyptic number.

289914487 is a deficient number, since it is larger than the sum of its proper divisors (142193).

289914487 is a wasteful number, since it uses less digits than its factorization.

289914487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142192.

The product of its digits is 1161216, while the sum is 52.

The square root of 289914487 is about 17026.8754326799. The cubic root of 289914487 is about 661.8455286819.

The spelling of 289914487 in words is "two hundred eighty-nine million, nine hundred fourteen thousand, four hundred eighty-seven".