1023440569 has 2 divisors, whose sum is σ = 1023440570. Its totient is φ = 1023440568.

The previous prime is 1023440527. The next prime is 1023440573. The reversal of 1023440569 is 9650443201.

It is a happy number.

1023440569 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 670188544 + 353252025 = 25888^2 + 18795^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1023440569 is a prime.

It is a super-2 number, since 2×1023440569² = 2094861196550087522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1023440599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511720284 + 511720285.

It is an arithmetic number, because the mean of its divisors is an integer number (511720285).

Almost surely, 2^1023440569 is an apocalyptic number.

It is an amenable number.

1023440569 is a deficient number, since it is larger than the sum of its proper divisors (1).

1023440569 is an equidigital number, since it uses as much as digits as its factorization.

1023440569 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 1023440569 is about 31991.2576964395. The cubic root of 1023440569 is about 1007.7532546848.

The spelling of 1023440569 in words is "one billion, twenty-three million, four hundred forty thousand, five hundred sixty-nine".