4008401 has 4 divisors (see below), whose sum is σ = 4076400. Its totient is φ = 3940404.

The previous prime is 4008397. The next prime is 4008421. The reversal of 4008401 is 1048004.

It is a happy number.

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 4008401 - 2² = 4008397 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4008401.

It is not an unprimeable number, because it can be changed into a prime (4008421) 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, 33911 + ... + 34028.

It is an arithmetic number, because the mean of its divisors is an integer number (1019100).

Almost surely, 2^4008401 is an apocalyptic number.

It is an amenable number.

4008401 is a deficient number, since it is larger than the sum of its proper divisors (67999).

4008401 is an equidigital number, since it uses as much as digits as its factorization.

4008401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67998.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 4008401 is about 2002.0991483940. The cubic root of 4008401 is about 158.8511587883.

The spelling of 4008401 in words is "four million, eight thousand, four hundred one".