8915440999 has 2 divisors, whose sum is σ = 8915441000. Its totient is φ = 8915440998.

The previous prime is 8915440949. The next prime is 8915441009. The reversal of 8915440999 is 9990445198.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8915440999 - 2¹³ = 8915432807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8915440949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4457720499 + 4457720500.

It is an arithmetic number, because the mean of its divisors is an integer number (4457720500).

Almost surely, 2^8915440999 is an apocalyptic number.

8915440999 is a deficient number, since it is larger than the sum of its proper divisors (1).

8915440999 is an equidigital number, since it uses as much as digits as its factorization.

8915440999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4199040, while the sum is 58.

The square root of 8915440999 is about 94421.6129866462. The cubic root of 8915440999 is about 2073.5488764661.

The spelling of 8915440999 in words is "eight billion, nine hundred fifteen million, four hundred forty thousand, nine hundred ninety-nine".