288698812249 has 3 divisors (see below), whose sum is σ = 288699349557. Its totient is φ = 288698274942.

The previous prime is 288698812247. The next prime is 288698812261. The reversal of 288698812249 is 942218896882.

The square root of 288698812249 is 537307.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 288698812249 - 2¹ = 288698812247 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (288698812247) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 268654 + ... + 805960.

It is an arithmetic number, because the mean of its divisors is an integer number (96233116519).

Almost surely, 2^288698812249 is an apocalyptic number.

288698812249 is the 537307-th square number.

288698812249 is the 268654-th centered octagonal number.

It is an amenable number.

288698812249 is a deficient number, since it is larger than the sum of its proper divisors (537308).

288698812249 is an frugal number, since it uses more digits than its factorization.

288698812249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1074614 (or 537307 counting only the distinct ones).

The product of its digits is 63700992, while the sum is 67.

The spelling of 288698812249 in words is "two hundred eighty-eight billion, six hundred ninety-eight million, eight hundred twelve thousand, two hundred forty-nine".