402838853 has 2 divisors, whose sum is σ = 402838854. Its totient is φ = 402838852.

The previous prime is 402838829. The next prime is 402838861. The reversal of 402838853 is 358838204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 352613284 + 50225569 = 18778^2 + 7087^2 .

It is a cyclic number.

It is not a de Polignac number, because 402838853 - 2⁶ = 402838789 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 402838853.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402808853) 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, 201419426 + 201419427.

It is an arithmetic number, because the mean of its divisors is an integer number (201419427).

Almost surely, 2^402838853 is an apocalyptic number.

It is an amenable number.

402838853 is a deficient number, since it is larger than the sum of its proper divisors (1).

402838853 is an equidigital number, since it uses as much as digits as its factorization.

402838853 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 184320, while the sum is 41.

The square root of 402838853 is about 20070.8458466503. The cubic root of 402838853 is about 738.5452629545.

The spelling of 402838853 in words is "four hundred two million, eight hundred thirty-eight thousand, eight hundred fifty-three".