289938386 has 16 divisors (see below), whose sum is σ = 438467904. Its totient is φ = 143786544.

The previous prime is 289938371. The next prime is 289938403. The reversal of 289938386 is 683839982.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 257621 + ... + 258743.

It is an arithmetic number, because the mean of its divisors is an integer number (27404244).

Almost surely, 2^289938386 is an apocalyptic number.

289938386 is a deficient number, since it is larger than the sum of its proper divisors (148529518).

289938386 is a wasteful number, since it uses less digits than its factorization.

289938386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2065.

The product of its digits is 4478976, while the sum is 56.

The square root of 289938386 is about 17027.5772204973. The cubic root of 289938386 is about 661.8637145176.

The spelling of 289938386 in words is "two hundred eighty-nine million, nine hundred thirty-eight thousand, three hundred eighty-six".