402144434339 has 2 divisors, whose sum is σ = 402144434340. Its totient is φ = 402144434338.

The previous prime is 402144434309. The next prime is 402144434387. The reversal of 402144434339 is 933434441204.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 402144434339 - 2¹² = 402144430243 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 402144434296 and 402144434305.

It is not a weakly prime, because it can be changed into another prime (402144434309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201072217169 + 201072217170.

It is an arithmetic number, because the mean of its divisors is an integer number (201072217170).

Almost surely, 2^402144434339 is an apocalyptic number.

402144434339 is a deficient number, since it is larger than the sum of its proper divisors (1).

402144434339 is an equidigital number, since it uses as much as digits as its factorization.

402144434339 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 497664, while the sum is 41.

The spelling of 402144434339 in words is "four hundred two billion, one hundred forty-four million, four hundred thirty-four thousand, three hundred thirty-nine".