438091146 has 16 divisors (see below), whose sum is σ = 973536000. Its totient is φ = 146030364.

The previous prime is 438091127. The next prime is 438091193. The reversal of 438091146 is 641190834.

It is a self number, because there is not a number n which added to its sum of digits gives 438091146.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4056346 + ... + 4056453.

It is an arithmetic number, because the mean of its divisors is an integer number (60846000).

Almost surely, 2^438091146 is an apocalyptic number.

438091146 is an abundant number, since it is smaller than the sum of its proper divisors (535444854).

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

438091146 is a wasteful number, since it uses less digits than its factorization.

438091146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8112810 (or 8112804 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 438091146 is about 20930.6269853533. The cubic root of 438091146 is about 759.4890066904.

The spelling of 438091146 in words is "four hundred thirty-eight million, ninety-one thousand, one hundred forty-six".