289455836121 has 15 divisors (see below), whose sum is σ = 432404223141. Its totient is φ = 192967329348.

The previous prime is 289455836099. The next prime is 289455836143. The reversal of 289455836121 is 121638554982.

The square root of 289455836121 is 538011.

It is a perfect power (a square), and thus also a powerful number.

289455836121 is a `hidden beast` number, since 2 + 8 + 9 + 4 + 558 + 3 + 61 + 21 = 666.

It is an interprime number because it is at equal distance from previous prime (289455836099) and next prime (289455836143).

It is not a de Polignac number, because 289455836121 - 2³¹ = 287308352473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (289455836171) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 4812210 + ... + 4871988.

Almost surely, 2^289455836121 is an apocalyptic number.

289455836121 is the 538011-st square number.

289455836121 is the 269006-th centered octagonal number.

It is an amenable number.

289455836121 is a deficient number, since it is larger than the sum of its proper divisors (142948387020).

289455836121 is an frugal number, since it uses more digits than its factorization.

289455836121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119570 (or 59782 counting only the distinct ones).

The product of its digits is 4147200, while the sum is 54.

The spelling of 289455836121 in words is "two hundred eighty-nine billion, four hundred fifty-five million, eight hundred thirty-six thousand, one hundred twenty-one".