6396401 has 4 divisors (see below), whose sum is σ = 6977904. Its totient is φ = 5814900.

The previous prime is 6396389. The next prime is 6396409. The reversal of 6396401 is 1046936.

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 a cyclic number.

It is not a de Polignac number, because 6396401 - 2¹⁰ = 6395377 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6396409) 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, 290735 + ... + 290756.

It is an arithmetic number, because the mean of its divisors is an integer number (1744476).

Almost surely, 2^6396401 is an apocalyptic number.

It is an amenable number.

6396401 is a deficient number, since it is larger than the sum of its proper divisors (581503).

6396401 is a wasteful number, since it uses less digits than its factorization.

6396401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581502.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 6396401 is about 2529.1107132745. The cubic root of 6396401 is about 185.6287445726.

The spelling of 6396401 in words is "six million, three hundred ninety-six thousand, four hundred one".