3440220401 has 4 divisors (see below), whose sum is σ = 3440458212. Its totient is φ = 3439982592.

The previous prime is 3440220397. The next prime is 3440220409. The reversal of 3440220401 is 1040220443.

3440220401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1040220443 = 28657 ⋅36299.

It can be written as a sum of positive squares in 2 ways, for example, as 1870476001 + 1569744400 = 43249^2 + 39620^2 .

It is a cyclic number.

It is not a de Polignac number, because 3440220401 - 2² = 3440220397 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 (3440220409) 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, 95696 + ... + 126641.

It is an arithmetic number, because the mean of its divisors is an integer number (860114553).

Almost surely, 2^3440220401 is an apocalyptic number.

It is an amenable number.

3440220401 is a deficient number, since it is larger than the sum of its proper divisors (237811).

3440220401 is a wasteful number, since it uses less digits than its factorization.

3440220401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237810.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 3440220401 is about 58653.3920672965. The cubic root of 3440220401 is about 1509.6007015487.

Adding to 3440220401 its reverse (1040220443), we get a palindrome (4480440844).

The spelling of 3440220401 in words is "three billion, four hundred forty million, two hundred twenty thousand, four hundred one".