402871017 has 4 divisors (see below), whose sum is σ = 537161360. Its totient is φ = 268580676.

The previous prime is 402870991. The next prime is 402871037. The reversal of 402871017 is 710178204.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 402871017 - 2⁶ = 402870953 is a prime.

It is a super-2 number, since 2×402871017² = 324610112677228578, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402871037) 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, 67145167 + ... + 67145172.

It is an arithmetic number, because the mean of its divisors is an integer number (134290340).

Almost surely, 2^402871017 is an apocalyptic number.

It is an amenable number.

402871017 is a deficient number, since it is larger than the sum of its proper divisors (134290343).

402871017 is a wasteful number, since it uses less digits than its factorization.

402871017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134290342.

The product of its (nonzero) digits is 3136, while the sum is 30.

The square root of 402871017 is about 20071.6470923539. The cubic root of 402871017 is about 738.5649184052.

The spelling of 402871017 in words is "four hundred two million, eight hundred seventy-one thousand, seventeen".