289934465 has 8 divisors (see below), whose sum is σ = 352687848. Its totient is φ = 228769920.

The previous prime is 289934461. The next prime is 289934483. The reversal of 289934465 is 564439982.

It can be written as a sum of positive squares in 4 ways, for example, as 56731024 + 233203441 = 7532^2 + 15271^2 .

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

It is not a de Polignac number, because 289934465 - 2² = 289934461 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (289934461) 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, 396806 + ... + 397535.

It is an arithmetic number, because the mean of its divisors is an integer number (44085981).

Almost surely, 2^289934465 is an apocalyptic number.

It is an amenable number.

289934465 is a deficient number, since it is larger than the sum of its proper divisors (62753383).

289934465 is an equidigital number, since it uses as much as digits as its factorization.

289934465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 794419.

The product of its digits is 1866240, while the sum is 50.

The square root of 289934465 is about 17027.4620833523. The cubic root of 289934465 is about 661.8607309189.

The spelling of 289934465 in words is "two hundred eighty-nine million, nine hundred thirty-four thousand, four hundred sixty-five".