440221401 has 24 divisors (see below), whose sum is σ = 653709056. Its totient is φ = 285314400.

The previous prime is 440221391. The next prime is 440221427. The reversal of 440221401 is 104122044.

440221401 is a `hidden beast` number, since 4 + 40 + 221 + 401 = 666.

It is not a de Polignac number, because 440221401 - 2⁶ = 440221337 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 (440221451) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 83751 + ... + 88851.

Almost surely, 2^440221401 is an apocalyptic number.

It is an amenable number.

440221401 is a deficient number, since it is larger than the sum of its proper divisors (213487655).

440221401 is a wasteful number, since it uses less digits than its factorization.

440221401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5373 (or 5370 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 440221401 is about 20981.4537389572. The cubic root of 440221401 is about 760.7180431059.

Adding to 440221401 its reverse (104122044), we get a palindrome (544343445).

It can be divided in two parts, 440 and 221401, that added together give a square (221841 = 471²).

The spelling of 440221401 in words is "four hundred forty million, two hundred twenty-one thousand, four hundred one".