407638214421 has 16 divisors (see below), whose sum is σ = 568862292480. Its totient is φ = 259157867760.

The previous prime is 407638214413. The next prime is 407638214447. The reversal of 407638214421 is 124412836704.

It is not a de Polignac number, because 407638214421 - 2³ = 407638214413 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (407638214471) 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 15 ways as a sum of consecutive naturals, for example, 8901331 + ... + 8947008.

It is an arithmetic number, because the mean of its divisors is an integer number (35553893280).

Almost surely, 2^407638214421 is an apocalyptic number.

It is an amenable number.

407638214421 is a deficient number, since it is larger than the sum of its proper divisors (161224078059).

407638214421 is a wasteful number, since it uses less digits than its factorization.

407638214421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17848696.

The product of its (nonzero) digits is 258048, while the sum is 42.

The spelling of 407638214421 in words is "four hundred seven billion, six hundred thirty-eight million, two hundred fourteen thousand, four hundred twenty-one".