402444431311999 has 4 divisors (see below), whose sum is σ = 402445825265664. Its totient is φ = 402443037358336.

The previous prime is 402444431311997. The next prime is 402444431312081. The reversal of 402444431311999 is 999113134444204.

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

It is a cyclic number.

It is not a de Polignac number, because 402444431311999 - 2¹ = 402444431311997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402444431311997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 696543682 + ... + 697121215.

It is an arithmetic number, because the mean of its divisors is an integer number (100611456316416).

Almost surely, 2^{402444431311999} is an apocalyptic number.

402444431311999 is a deficient number, since it is larger than the sum of its proper divisors (1393953665).

402444431311999 is a wasteful number, since it uses less digits than its factorization.

402444431311999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1393953664.

The product of its (nonzero) digits is 13436928, while the sum is 58.

The spelling of 402444431311999 in words is "four hundred two trillion, four hundred forty-four billion, four hundred thirty-one million, three hundred eleven thousand, nine hundred ninety-nine".