400654773401 has 4 divisors (see below), whose sum is σ = 400712287872. Its totient is φ = 400597258932.

The previous prime is 400654773361. The next prime is 400654773413. The reversal of 400654773401 is 104377456004.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 400654773401 - 2²² = 400650579097 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (400654773451) 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, 28746785 + ... + 28760718.

It is an arithmetic number, because the mean of its divisors is an integer number (100178071968).

Almost surely, 2^400654773401 is an apocalyptic number.

It is an amenable number.

400654773401 is a deficient number, since it is larger than the sum of its proper divisors (57514471).

400654773401 is an equidigital number, since it uses as much as digits as its factorization.

400654773401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57514470.

The product of its (nonzero) digits is 282240, while the sum is 41.

The spelling of 400654773401 in words is "four hundred billion, six hundred fifty-four million, seven hundred seventy-three thousand, four hundred one".