403421171 has 2 divisors, whose sum is σ = 403421172. Its totient is φ = 403421170.

The previous prime is 403421153. The next prime is 403421189. The reversal of 403421171 is 171124304.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (403421153) and next prime (403421189).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-403421171 is a prime.

It is a super-2 number, since 2×403421171² = 325497282422022482, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (403421671) 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, 201710585 + 201710586.

It is an arithmetic number, because the mean of its divisors is an integer number (201710586).

Almost surely, 2^403421171 is an apocalyptic number.

403421171 is a deficient number, since it is larger than the sum of its proper divisors (1).

403421171 is an equidigital number, since it uses as much as digits as its factorization.

403421171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 403421171 is about 20085.3471715079. The cubic root of 403421171 is about 738.9009561696.

Adding to 403421171 its reverse (171124304), we get a palindrome (574545475).

The spelling of 403421171 in words is "four hundred three million, four hundred twenty-one thousand, one hundred seventy-one".