400321640483 has 4 divisors (see below), whose sum is σ = 400474379328. Its totient is φ = 400168901640.

The previous prime is 400321640479. The next prime is 400321640519. The reversal of 400321640483 is 384046123004.

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 400321640483 - 2² = 400321640479 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400321640443) 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 in 3 ways as a sum of consecutive naturals, for example, 76365491 + ... + 76370732.

It is an arithmetic number, because the mean of its divisors is an integer number (100118594832).

Almost surely, 2^400321640483 is an apocalyptic number.

400321640483 is a deficient number, since it is larger than the sum of its proper divisors (152738845).

400321640483 is a wasteful number, since it uses less digits than its factorization.

400321640483 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152738844.

The product of its (nonzero) digits is 55296, while the sum is 35.

Adding to 400321640483 its reverse (384046123004), we get a palindrome (784367763487).

The spelling of 400321640483 in words is "four hundred billion, three hundred twenty-one million, six hundred forty thousand, four hundred eighty-three".