289898647 has 8 divisors (see below), whose sum is σ = 309538944. Its totient is φ = 270844728.

The previous prime is 289898641. The next prime is 289898669. The reversal of 289898647 is 746898982.

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 289898647 - 2⁷ = 289898519 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 (289898641) 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, 145573 + ... + 147550.

It is an arithmetic number, because the mean of its divisors is an integer number (38692368).

Almost surely, 2^289898647 is an apocalyptic number.

289898647 is a deficient number, since it is larger than the sum of its proper divisors (19640297).

289898647 is a wasteful number, since it uses less digits than its factorization.

289898647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293189.

The product of its digits is 13934592, while the sum is 61.

The square root of 289898647 is about 17026.4102793278. The cubic root of 289898647 is about 661.8334747550.

It can be divided in two parts, 28989 and 8647, that added together give a square (37636 = 194²).

The spelling of 289898647 in words is "two hundred eighty-nine million, eight hundred ninety-eight thousand, six hundred forty-seven".