402863 has 2 divisors, whose sum is σ = 402864. Its totient is φ = 402862.

The previous prime is 402859. The next prime is 402869. The reversal of 402863 is 368204.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 402863 - 2² = 402859 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201431 + 201432.

It is an arithmetic number, because the mean of its divisors is an integer number (201432).

2⁴⁰²⁸⁶³ is an apocalyptic number.

402863 is a deficient number, since it is larger than the sum of its proper divisors (1).

402863 is an equidigital number, since it uses as much as digits as its factorization.

402863 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 402863 is about 634.7148966268. The cubic root of 402863 is about 73.8560019307.

The spelling of 402863 in words is "four hundred two thousand, eight hundred sixty-three".