9027872509 has 2 divisors, whose sum is σ = 9027872510. Its totient is φ = 9027872508.

The previous prime is 9027872437. The next prime is 9027872537. The reversal of 9027872509 is 9052787209.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5623500100 + 3404372409 = 74990^2 + 58347^2 .

It is a cyclic number.

It is not a de Polignac number, because 9027872509 - 2¹⁵ = 9027839741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9027872549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4513936254 + 4513936255.

It is an arithmetic number, because the mean of its divisors is an integer number (4513936255).

Almost surely, 2^9027872509 is an apocalyptic number.

It is an amenable number.

9027872509 is a deficient number, since it is larger than the sum of its proper divisors (1).

9027872509 is an equidigital number, since it uses as much as digits as its factorization.

9027872509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 635040, while the sum is 49.

The square root of 9027872509 is about 95015.1172656225. The cubic root of 9027872509 is about 2082.2289122055.

The spelling of 9027872509 in words is "nine billion, twenty-seven million, eight hundred seventy-two thousand, five hundred nine".