403421189 has 2 divisors, whose sum is σ = 403421190. Its totient is φ = 403421188.

The previous prime is 403421171. The next prime is 403421209. The reversal of 403421189 is 981124304.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 217562500 + 185858689 = 14750^2 + 13633^2 .

It is a cyclic number.

It is not a de Polignac number, because 403421189 - 2⁸ = 403420933 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (403421119) 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, 201710594 + 201710595.

It is an arithmetic number, because the mean of its divisors is an integer number (201710595).

Almost surely, 2^403421189 is an apocalyptic number.

It is an amenable number.

403421189 is a deficient number, since it is larger than the sum of its proper divisors (1).

403421189 is an equidigital number, since it uses as much as digits as its factorization.

403421189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 403421189 is about 20085.3476195957. The cubic root of 403421189 is about 738.9009671591.

The spelling of 403421189 in words is "four hundred three million, four hundred twenty-one thousand, one hundred eighty-nine".