4004220401 has 4 divisors (see below), whose sum is σ = 4112442612. Its totient is φ = 3895998192.

The previous prime is 4004220373. The next prime is 4004220419. The reversal of 4004220401 is 1040224004.

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 2333373025 + 1670847376 = 48305^2 + 40876^2 .

It is a cyclic number.

It is not a de Polignac number, because 4004220401 - 2²⁶ = 3937111537 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 4004220401.

It is not an unprimeable number, because it can be changed into a prime (4004220301) 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, 54111050 + ... + 54111123.

It is an arithmetic number, because the mean of its divisors is an integer number (1028110653).

Almost surely, 2^4004220401 is an apocalyptic number.

It is an amenable number.

4004220401 is a deficient number, since it is larger than the sum of its proper divisors (108222211).

4004220401 is a wasteful number, since it uses less digits than its factorization.

4004220401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108222210.

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 4004220401 is about 63278.9096065980. The cubic root of 4004220401 is about 1587.9591448152.

Adding to 4004220401 its reverse (1040224004), we get a palindrome (5044444405).

The spelling of 4004220401 in words is "four billion, four million, two hundred twenty thousand, four hundred one".