440129401 has 2 divisors, whose sum is σ = 440129402. Its totient is φ = 440129400.

The previous prime is 440129363. The next prime is 440129407. The reversal of 440129401 is 104921044.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 320445801 + 119683600 = 17901^2 + 10940^2 .

It is a cyclic number.

It is not a de Polignac number, because 440129401 - 2⁷ = 440129273 is a prime.

It is equal to p_23357041 and since 440129401 and 23357041 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (440129407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220064700 + 220064701.

It is an arithmetic number, because the mean of its divisors is an integer number (220064701).

Almost surely, 2^440129401 is an apocalyptic number.

It is an amenable number.

440129401 is a deficient number, since it is larger than the sum of its proper divisors (1).

440129401 is an equidigital number, since it uses as much as digits as its factorization.

440129401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 440129401 is about 20979.2612119684. The cubic root of 440129401 is about 760.6650463368.

The spelling of 440129401 in words is "four hundred forty million, one hundred twenty-nine thousand, four hundred one".