402418697 has 4 divisors (see below), whose sum is σ = 413294916. Its totient is φ = 391542480.

The previous prime is 402418673. The next prime is 402418717. The reversal of 402418697 is 796814204.

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

It can be written as a sum of positive squares in 2 ways, for example, as 354794896 + 47623801 = 18836^2 + 6901^2 .

It is a cyclic number.

It is not a de Polignac number, because 402418697 - 2⁶ = 402418633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402418607) 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, 5438054 + ... + 5438127.

It is an arithmetic number, because the mean of its divisors is an integer number (103323729).

Almost surely, 2^402418697 is an apocalyptic number.

It is an amenable number.

402418697 is a deficient number, since it is larger than the sum of its proper divisors (10876219).

402418697 is a wasteful number, since it uses less digits than its factorization.

402418697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10876218.

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 402418697 is about 20060.3762925824. The cubic root of 402418697 is about 738.2884090745.

The spelling of 402418697 in words is "four hundred two million, four hundred eighteen thousand, six hundred ninety-seven".