402040382089 has 2 divisors, whose sum is σ = 402040382090. Its totient is φ = 402040382088.

The previous prime is 402040381987. The next prime is 402040382113. The reversal of 402040382089 is 980283040204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 368813290000 + 33227092089 = 607300^2 + 182283^2 .

It is a cyclic number.

It is not a de Polignac number, because 402040382089 - 2¹¹ = 402040380041 is a prime.

It is a super-2 number, since 2×402040382089² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (402040388089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201020191044 + 201020191045.

It is an arithmetic number, because the mean of its divisors is an integer number (201020191045).

Almost surely, 2^402040382089 is an apocalyptic number.

It is an amenable number.

402040382089 is a deficient number, since it is larger than the sum of its proper divisors (1).

402040382089 is an equidigital number, since it uses as much as digits as its factorization.

402040382089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 110592, while the sum is 40.

The spelling of 402040382089 in words is "four hundred two billion, forty million, three hundred eighty-two thousand, eighty-nine".