440422091 has 4 divisors (see below), whose sum is σ = 441444384. Its totient is φ = 439399800.

The previous prime is 440422061. The next prime is 440422117. The reversal of 440422091 is 190224044.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-440422091 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 440422091.

It is not an unprimeable number, because it can be changed into a prime (440422061) 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, 510500 + ... + 511361.

It is an arithmetic number, because the mean of its divisors is an integer number (110361096).

Almost surely, 2^440422091 is an apocalyptic number.

440422091 is a deficient number, since it is larger than the sum of its proper divisors (1022293).

440422091 is a wasteful number, since it uses less digits than its factorization.

440422091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1022292.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 440422091 is about 20986.2357510822. The cubic root of 440422091 is about 760.8336253333.

The spelling of 440422091 in words is "four hundred forty million, four hundred twenty-two thousand, ninety-one".