440142629 has 2 divisors, whose sum is σ = 440142630. Its totient is φ = 440142628.

The previous prime is 440142607. The next prime is 440142671. The reversal of 440142629 is 926241044.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 366148225 + 73994404 = 19135^2 + 8602^2 .

It is a cyclic number.

It is not a de Polignac number, because 440142629 - 2¹² = 440138533 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 440142595 and 440142604.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (440141629) 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, 220071314 + 220071315.

It is an arithmetic number, because the mean of its divisors is an integer number (220071315).

Almost surely, 2^440142629 is an apocalyptic number.

It is an amenable number.

440142629 is a deficient number, since it is larger than the sum of its proper divisors (1).

440142629 is an equidigital number, since it uses as much as digits as its factorization.

440142629 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 440142629 is about 20979.5764733228. The cubic root of 440142629 is about 760.6726668051.

The spelling of 440142629 in words is "four hundred forty million, one hundred forty-two thousand, six hundred twenty-nine".