4288809121 has 9 divisors (see below), whose sum is σ = 4393753329. Its totient is φ = 4186318836.

The previous prime is 4288809097. The next prime is 4288809127. The reversal of 4288809121 is 1219088824.

The square root of 4288809121 is 65489.

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

It is not a de Polignac number, because 4288809121 - 2⁵ = 4288809089 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4288809127) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2815266 + ... + 2816788.

Almost surely, 2^4288809121 is an apocalyptic number.

4288809121 is the 65489-th square number.

4288809121 is the 32745-th centered octagonal number.

It is an amenable number.

4288809121 is a deficient number, since it is larger than the sum of its proper divisors (104944208).

4288809121 is an frugal number, since it uses more digits than its factorization.

4288809121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3132 (or 1566 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 43.

The cubic root of 4288809121 is about 1624.7214191951.

The spelling of 4288809121 in words is "four billion, two hundred eighty-eight million, eight hundred nine thousand, one hundred twenty-one".