444400130 has 16 divisors (see below), whose sum is σ = 801279864. Its totient is φ = 177457920.

The previous prime is 444400127. The next prime is 444400133. The reversal of 444400130 is 31004444.

It is an interprime number because it is at equal distance from previous prime (444400127) and next prime (444400133).

It can be written as a sum of positive squares in 4 ways, for example, as 305655289 + 138744841 = 17483^2 + 11779^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (444400133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31541 + ... + 43400.

Almost surely, 2^444400130 is an apocalyptic number.

444400130 is a deficient number, since it is larger than the sum of its proper divisors (356879734).

444400130 is a wasteful number, since it uses less digits than its factorization.

444400130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75541.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 444400130 is about 21080.8000322568. The cubic root of 444400130 is about 763.1174638380.

Adding to 444400130 its reverse (31004444), we get a palindrome (475404574).

The spelling of 444400130 in words is "four hundred forty-four million, four hundred thousand, one hundred thirty".