140430569 has 2 divisors, whose sum is σ = 140430570. Its totient is φ = 140430568.

The previous prime is 140430551. The next prime is 140430581. The reversal of 140430569 is 965034041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 139546969 + 883600 = 11813^2 + 940^2 .

It is a cyclic number.

It is not a de Polignac number, because 140430569 - 2²⁴ = 123653353 is a prime.

It is a super-2 number, since 2×140430569² = 39441489419327522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (140430529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70215284 + 70215285.

It is an arithmetic number, because the mean of its divisors is an integer number (70215285).

Almost surely, 2^140430569 is an apocalyptic number.

It is an amenable number.

140430569 is a deficient number, since it is larger than the sum of its proper divisors (1).

140430569 is an equidigital number, since it uses as much as digits as its factorization.

140430569 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 140430569 is about 11850.3404592442. The cubic root of 140430569 is about 519.7811813550.

The spelling of 140430569 in words is "one hundred forty million, four hundred thirty thousand, five hundred sixty-nine".