923143499 has 2 divisors, whose sum is σ = 923143500. Its totient is φ = 923143498.

The previous prime is 923143493. The next prime is 923143547. The reversal of 923143499 is 994341329.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-923143499 is a prime.

It is not a weakly prime, because it can be changed into another prime (923143493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 461571749 + 461571750.

It is an arithmetic number, because the mean of its divisors is an integer number (461571750).

Almost surely, 2^923143499 is an apocalyptic number.

923143499 is a deficient number, since it is larger than the sum of its proper divisors (1).

923143499 is an equidigital number, since it uses as much as digits as its factorization.

923143499 is an evil number, because the sum of its binary digits is even.

The product of its digits is 209952, while the sum is 44.

The square root of 923143499 is about 30383.2766337010. The cubic root of 923143499 is about 973.6952959481.

The spelling of 923143499 in words is "nine hundred twenty-three million, one hundred forty-three thousand, four hundred ninety-nine".