440101021 has 12 divisors (see below), whose sum is σ = 465935680. Its totient is φ = 415598040.

The previous prime is 440101003. The next prime is 440101027. The reversal of 440101021 is 120101044.

It is not a de Polignac number, because 440101021 - 2⁵ = 440100989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 440100992 and 440101010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440101027) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36526 + ... + 47056.

Almost surely, 2^440101021 is an apocalyptic number.

It is an amenable number.

440101021 is a deficient number, since it is larger than the sum of its proper divisors (25834659).

440101021 is a wasteful number, since it uses less digits than its factorization.

440101021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10656 (or 10633 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 440101021 is about 20978.5848188099. The cubic root of 440101021 is about 760.6486964951.

Adding to 440101021 its reverse (120101044), we get a palindrome (560202065).

The spelling of 440101021 in words is "four hundred forty million, one hundred one thousand, twenty-one".