402445554441 has 8 divisors (see below), whose sum is σ = 613250368704. Its totient is φ = 229968888240.

The previous prime is 402445554421. The next prime is 402445554457. The reversal of 402445554441 is 144455544204.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 402445554441 - 2⁹ = 402445553929 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 402445554393 and 402445554402.

It is not an unprimeable number, because it can be changed into a prime (402445554421) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 9582036990 + ... + 9582037031.

It is an arithmetic number, because the mean of its divisors is an integer number (76656296088).

Almost surely, 2^402445554441 is an apocalyptic number.

It is an amenable number.

402445554441 is a deficient number, since it is larger than the sum of its proper divisors (210804814263).

402445554441 is a wasteful number, since it uses less digits than its factorization.

402445554441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19164074031.

The product of its (nonzero) digits is 1024000, while the sum is 42.

The spelling of 402445554441 in words is "four hundred two billion, four hundred forty-five million, five hundred fifty-four thousand, four hundred forty-one".