438040700 has 36 divisors (see below), whose sum is σ = 1006466832. Its totient is φ = 164908800.

The previous prime is 438040697. The next prime is 438040709. The reversal of 438040700 is 7040834.

It is a self number, because there is not a number n which added to its sum of digits gives 438040700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438040709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 127136 + ... + 130535.

It is an arithmetic number, because the mean of its divisors is an integer number (27957412).

Almost surely, 2^438040700 is an apocalyptic number.

It is an amenable number.

438040700 is an abundant number, since it is smaller than the sum of its proper divisors (568426132).

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

438040700 is a wasteful number, since it uses less digits than its factorization.

438040700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257702 (or 257695 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 438040700 is about 20929.4218744809. The cubic root of 438040700 is about 759.4598539647.

The spelling of 438040700 in words is "four hundred thirty-eight million, forty thousand, seven hundred".