440173157 has 2 divisors, whose sum is σ = 440173158. Its totient is φ = 440173156.

The previous prime is 440173147. The next prime is 440173159. The reversal of 440173157 is 751371044.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 238362721 + 201810436 = 15439^2 + 14206^2 .

It is a cyclic number.

It is not a de Polignac number, because 440173157 - 2⁴ = 440173141 is a prime.

Together with 440173159, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (440173159) 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 as a sum of consecutive naturals, namely, 220086578 + 220086579.

It is an arithmetic number, because the mean of its divisors is an integer number (220086579).

Almost surely, 2^440173157 is an apocalyptic number.

It is an amenable number.

440173157 is a deficient number, since it is larger than the sum of its proper divisors (1).

440173157 is an equidigital number, since it uses as much as digits as its factorization.

440173157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 440173157 is about 20980.3040254425. The cubic root of 440173157 is about 760.6902529819.

It can be divided in two parts, 44017 and 3157, that added together give a palindrome (47174).

The spelling of 440173157 in words is "four hundred forty million, one hundred seventy-three thousand, one hundred fifty-seven".