402043999993 has 2 divisors, whose sum is σ = 402043999994. Its totient is φ = 402043999992.

The previous prime is 402043999991. The next prime is 402044000009. The reversal of 402043999993 is 399999340204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 399963910329 + 2080089664 = 632427^2 + 45608^2 .

It is a cyclic number.

It is not a de Polignac number, because 402043999993 - 2¹ = 402043999991 is a prime.

Together with 402043999991, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (402043999991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201021999996 + 201021999997.

It is an arithmetic number, because the mean of its divisors is an integer number (201021999997).

Almost surely, 2^402043999993 is an apocalyptic number.

It is an amenable number.

402043999993 is a deficient number, since it is larger than the sum of its proper divisors (1).

402043999993 is an equidigital number, since it uses as much as digits as its factorization.

402043999993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17006112, while the sum is 61.

The spelling of 402043999993 in words is "four hundred two billion, forty-three million, nine hundred ninety-nine thousand, nine hundred ninety-three".