440023231402 has 4 divisors (see below), whose sum is σ = 660034847106. Its totient is φ = 220011615700.

The previous prime is 440023231399. The next prime is 440023231423. The reversal of 440023231402 is 204132320044.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 419151361561 + 20871869841 = 647419^2 + 144471^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110005807849 + ... + 110005807852.

Almost surely, 2^440023231402 is an apocalyptic number.

440023231402 is a deficient number, since it is larger than the sum of its proper divisors (220011615704).

440023231402 is a wasteful number, since it uses less digits than its factorization.

440023231402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220011615703.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 440023231402 its reverse (204132320044), we get a palindrome (644155551446).

The spelling of 440023231402 in words is "four hundred forty billion, twenty-three million, two hundred thirty-one thousand, four hundred two".