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4400421 = 313111197
BaseRepresentation
bin10000110010010100100101
322021120020120
4100302110211
52111303141
6234152153
752255134
oct20622445
98246216
104400421
112536113
121582659
13bb0bcc
1482791b
155bdc66
hex432525

4400421 has 8 divisors (see below), whose sum is σ = 5912544. Its totient is φ = 2910960.

The previous prime is 4400413. The next prime is 4400443. The reversal of 4400421 is 1240044.

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

It is not a de Polignac number, because 4400421 - 23 = 4400413 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4400421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4400401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5206 + ... + 5991.

It is an arithmetic number, because the mean of its divisors is an integer number (739068).

Almost surely, 24400421 is an apocalyptic number.

It is an amenable number.

4400421 is a deficient number, since it is larger than the sum of its proper divisors (1512123).

4400421 is a wasteful number, since it uses less digits than its factorization.

4400421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11331.

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 4400421 is about 2097.7180458775. The cubic root of 4400421 is about 163.8694802300.

Adding to 4400421 its reverse (1240044), we get a palindrome (5640465).

The spelling of 4400421 in words is "four million, four hundred thousand, four hundred twenty-one".

Divisors: 1 3 131 393 11197 33591 1466807 4400421