440013157 has 2 divisors, whose sum is σ = 440013158. Its totient is φ = 440013156.

The previous prime is 440013151. The next prime is 440013169. The reversal of 440013157 is 751310044.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 439363521 + 649636 = 20961^2 + 806^2 .

It is a cyclic number.

It is not a de Polignac number, because 440013157 - 2⁷ = 440013029 is a prime.

It is a super-2 number, since 2×440013157² = 387223156666213298, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (440013151) 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, 220006578 + 220006579.

It is an arithmetic number, because the mean of its divisors is an integer number (220006579).

Almost surely, 2^440013157 is an apocalyptic number.

It is an amenable number.

440013157 is a deficient number, since it is larger than the sum of its proper divisors (1).

440013157 is an equidigital number, since it uses as much as digits as its factorization.

440013157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 440013157 is about 20976.4905787408. The cubic root of 440013157 is about 760.5980732048.

The spelling of 440013157 in words is "four hundred forty million, thirteen thousand, one hundred fifty-seven".