402636341 has 4 divisors (see below), whose sum is σ = 402676512. Its totient is φ = 402596172.

The previous prime is 402636337. The next prime is 402636343. The reversal of 402636341 is 143636204.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 402636341 - 2² = 402636337 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402636343) 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, 8726 + ... + 29688.

It is an arithmetic number, because the mean of its divisors is an integer number (100669128).

Almost surely, 2^402636341 is an apocalyptic number.

It is an amenable number.

402636341 is a deficient number, since it is larger than the sum of its proper divisors (40171).

402636341 is a wasteful number, since it uses less digits than its factorization.

402636341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40170.

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 402636341 is about 20065.8002830687. The cubic root of 402636341 is about 738.4214836428.

The spelling of 402636341 in words is "four hundred two million, six hundred thirty-six thousand, three hundred forty-one".