400454400350221 has 8 divisors (see below), whose sum is σ = 458387468461184. Its totient is φ = 342702656397360.

The previous prime is 400454400350083. The next prime is 400454400350281. The reversal of 400454400350221 is 122053004454004.

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

It is not a de Polignac number, because 400454400350221 - 2²⁹ = 400453863479309 is a prime.

It is a super-3 number, since 3×400454400350221³ (a number of 45 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400454400350281) 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 7 ways as a sum of consecutive naturals, for example, 45331034790 + ... + 45331043623.

It is an arithmetic number, because the mean of its divisors is an integer number (57298433557648).

Almost surely, 2^{400454400350221} is an apocalyptic number.

It is an amenable number.

400454400350221 is a deficient number, since it is larger than the sum of its proper divisors (57933068110963).

400454400350221 is an equidigital number, since it uses as much as digits as its factorization.

400454400350221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90662079051.

The product of its (nonzero) digits is 76800, while the sum is 34.

The spelling of 400454400350221 in words is "four hundred trillion, four hundred fifty-four billion, four hundred million, three hundred fifty thousand, two hundred twenty-one".