46400221 has 8 divisors (see below), whose sum is σ = 53115264. Its totient is φ = 39706800.

The previous prime is 46400213. The next prime is 46400227. The reversal of 46400221 is 12200464.

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

It is not a de Polignac number, because 46400221 - 2³ = 46400213 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 (46400227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 505 + ... + 9646.

It is an arithmetic number, because the mean of its divisors is an integer number (6639408).

Almost surely, 2^46400221 is an apocalyptic number.

It is an amenable number.

46400221 is a deficient number, since it is larger than the sum of its proper divisors (6715043).

46400221 is a wasteful number, since it uses less digits than its factorization.

46400221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10811.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 46400221 is about 6811.7707683098. The cubic root of 46400221 is about 359.3409263321.

Adding to 46400221 its reverse (12200464), we get a palindrome (58600685).

The spelling of 46400221 in words is "forty-six million, four hundred thousand, two hundred twenty-one".