4400644413 has 8 divisors (see below), whose sum is σ = 6400937376. Its totient is φ = 2667057200.

The previous prime is 4400644399. The next prime is 4400644481. The reversal of 4400644413 is 3144460044.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4400644413 - 2¹² = 4400640317 is a prime.

It is a super-2 number, since 2×4400644413² = 38731342499336229138, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4400644013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66676398 + ... + 66676463.

It is an arithmetic number, because the mean of its divisors is an integer number (800117172).

Almost surely, 2^4400644413 is an apocalyptic number.

It is an amenable number.

4400644413 is a deficient number, since it is larger than the sum of its proper divisors (2000292963).

4400644413 is a wasteful number, since it uses less digits than its factorization.

4400644413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133352875.

The product of its (nonzero) digits is 18432, while the sum is 30.

The square root of 4400644413 is about 66337.3530750210. The cubic root of 4400644413 is about 1638.7225344595.

The spelling of 4400644413 in words is "four billion, four hundred million, six hundred forty-four thousand, four hundred thirteen".