402068039 has 2 divisors, whose sum is σ = 402068040. Its totient is φ = 402068038.

The previous prime is 402068021. The next prime is 402068041. The reversal of 402068039 is 930860204.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-402068039 is a prime.

It is a Sophie Germain prime.

Together with 402068041, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 402067996 and 402068014.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402068839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201034019 + 201034020.

It is an arithmetic number, because the mean of its divisors is an integer number (201034020).

Almost surely, 2^402068039 is an apocalyptic number.

402068039 is a deficient number, since it is larger than the sum of its proper divisors (1).

402068039 is an equidigital number, since it uses as much as digits as its factorization.

402068039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 402068039 is about 20051.6343224187. The cubic root of 402068039 is about 738.0739044875.

The spelling of 402068039 in words is "four hundred two million, sixty-eight thousand, thirty-nine".