440438051 has 4 divisors (see below), whose sum is σ = 455625600. Its totient is φ = 425250504.

The previous prime is 440438039. The next prime is 440438059. The reversal of 440438051 is 150834044.

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 440438051 - 2²² = 436243747 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 15187519 = 440438051 / (4 + 4 + 0 + 4 + 3 + 8 + 0 + 5 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (440438059) 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 3 ways as a sum of consecutive naturals, for example, 7593731 + ... + 7593788.

It is an arithmetic number, because the mean of its divisors is an integer number (113906400).

Almost surely, 2^440438051 is an apocalyptic number.

440438051 is the 9386-th centered decagonal number.

440438051 is a deficient number, since it is larger than the sum of its proper divisors (15187549).

440438051 is a wasteful number, since it uses less digits than its factorization.

440438051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15187548.

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 440438051 is about 20986.6159968681. The cubic root of 440438051 is about 760.8428155762.

The spelling of 440438051 in words is "four hundred forty million, four hundred thirty-eight thousand, fifty-one".