441421638 has 32 divisors (see below), whose sum is σ = 1010306304. Its totient is φ = 125952672.

The previous prime is 441421579. The next prime is 441421649. The reversal of 441421638 is 836124144.

It is a junction number, because it is equal to n+sod(n) for n = 441421599 and 441421608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26881 + ... + 40067.

It is an arithmetic number, because the mean of its divisors is an integer number (31572072).

Almost surely, 2^441421638 is an apocalyptic number.

441421638 is an abundant number, since it is smaller than the sum of its proper divisors (568884666).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

441421638 is a wasteful number, since it uses less digits than its factorization.

441421638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13996.

The product of its digits is 18432, while the sum is 33.

The square root of 441421638 is about 21010.0366015864. The cubic root of 441421638 is about 761.4087663116.

The spelling of 441421638 in words is "four hundred forty-one million, four hundred twenty-one thousand, six hundred thirty-eight".