440051 has 4 divisors (see below), whose sum is σ = 441504. Its totient is φ = 438600.

The previous prime is 440047. The next prime is 440087. The reversal of 440051 is 150044.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 440051 - 2² = 440047 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (440551) 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 3 ways as a sum of consecutive naturals, for example, 80 + ... + 941.

It is an arithmetic number, because the mean of its divisors is an integer number (110376).

2⁴⁴⁰⁰⁵¹ is an apocalyptic number.

440051 is a deficient number, since it is larger than the sum of its proper divisors (1453).

440051 is a wasteful number, since it uses less digits than its factorization.

440051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1452.

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 440051 is about 663.3633996536. The cubic root of 440051 is about 76.0619877468.

Adding to 440051 its reverse (150044), we get a palindrome (590095).

The spelling of 440051 in words is "four hundred forty thousand, fifty-one".