289114388 has 12 divisors (see below), whose sum is σ = 509644212. Its totient is φ = 143501760.

The previous prime is 289114387. The next prime is 289114403. The reversal of 289114388 is 883411982.

It can be written as a sum of positive squares in 2 ways, for example, as 132664324 + 156450064 = 11518^2 + 12508^2 .

It is a super-2 number, since 2×289114388² = 167174258697229088, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289114381) 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, 263243 + ... + 264338.

It is an arithmetic number, because the mean of its divisors is an integer number (42470351).

Almost surely, 2^289114388 is an apocalyptic number.

It is an amenable number.

289114388 is a deficient number, since it is larger than the sum of its proper divisors (220529824).

289114388 is a wasteful number, since it uses less digits than its factorization.

289114388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 527722 (or 527720 counting only the distinct ones).

The product of its digits is 110592, while the sum is 44.

The square root of 289114388 is about 17003.3640200991. The cubic root of 289114388 is about 661.2361192908.

The spelling of 289114388 in words is "two hundred eighty-nine million, one hundred fourteen thousand, three hundred eighty-eight".