4400919 has 8 divisors (see below), whose sum is σ = 6519920. Its totient is φ = 2933928.

The previous prime is 4400917. The next prime is 4400923. The reversal of 4400919 is 9190044.

It is not a de Polignac number, because 4400919 - 2¹ = 4400917 is a prime.

It is a super-2 number, since 2×4400919² = 38736176089122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 162997 = 4400919 / (4 + 4 + 0 + 0 + 9 + 1 + 9).

It is a Duffinian number.

4400919 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 4400892 and 4400901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4400917) 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 7 ways as a sum of consecutive naturals, for example, 81472 + ... + 81525.

It is an arithmetic number, because the mean of its divisors is an integer number (814990).

Almost surely, 2^4400919 is an apocalyptic number.

4400919 is a deficient number, since it is larger than the sum of its proper divisors (2119001).

4400919 is a wasteful number, since it uses less digits than its factorization.

4400919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163006 (or 163000 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 4400919 is about 2097.8367429331. The cubic root of 4400919 is about 163.8756617539.

The spelling of 4400919 in words is "four million, four hundred thousand, nine hundred nineteen".