4400121441 has 16 divisors (see below), whose sum is σ = 6538881600. Its totient is φ = 2615551488.

The previous prime is 4400121409. The next prime is 4400121443. The reversal of 4400121441 is 1441210044.

It is not a de Polignac number, because 4400121441 - 2⁵ = 4400121409 is a prime.

It is a super-2 number, since 2×4400121441² = 38722137391095832962, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4400121443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2269476 + ... + 2271413.

It is an arithmetic number, because the mean of its divisors is an integer number (408680100).

Almost surely, 2^4400121441 is an apocalyptic number.

It is an amenable number.

4400121441 is a deficient number, since it is larger than the sum of its proper divisors (2138760159).

4400121441 is a wasteful number, since it uses less digits than its factorization.

4400121441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4540928.

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 4400121441 is about 66333.4111967717. The cubic root of 4400121441 is about 1638.6576166981.

Adding to 4400121441 its reverse (1441210044), we get a palindrome (5841331485).

The spelling of 4400121441 in words is "four billion, four hundred million, one hundred twenty-one thousand, four hundred forty-one".