402953171 has 4 divisors (see below), whose sum is σ = 403213200. Its totient is φ = 402693144.

The previous prime is 402953149. The next prime is 402953203. The reversal of 402953171 is 171359204.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-402953171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402953671) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127676 + ... + 130793.

It is an arithmetic number, because the mean of its divisors is an integer number (100803300).

Almost surely, 2^402953171 is an apocalyptic number.

402953171 is a deficient number, since it is larger than the sum of its proper divisors (260029).

402953171 is a wasteful number, since it uses less digits than its factorization.

402953171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260028.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 402953171 is about 20073.6935066768. The cubic root of 402953171 is about 738.6151180438.

The spelling of 402953171 in words is "four hundred two million, nine hundred fifty-three thousand, one hundred seventy-one".