438777340 has 12 divisors (see below), whose sum is σ = 921432456. Its totient is φ = 175510928.

The previous prime is 438777329. The next prime is 438777341. The reversal of 438777340 is 43777834.

It is a super-3 number, since 3×438777340³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438777341) 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 3 ways as a sum of consecutive naturals, for example, 10969414 + ... + 10969453.

It is an arithmetic number, because the mean of its divisors is an integer number (76786038).

Almost surely, 2^438777340 is an apocalyptic number.

It is an amenable number.

438777340 is an abundant number, since it is smaller than the sum of its proper divisors (482655116).

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

438777340 is a wasteful number, since it uses less digits than its factorization.

438777340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21938876 (or 21938874 counting only the distinct ones).

The product of its (nonzero) digits is 395136, while the sum is 43.

The square root of 438777340 is about 20947.0126748422. The cubic root of 438777340 is about 759.8853358867.

The spelling of 438777340 in words is "four hundred thirty-eight million, seven hundred seventy-seven thousand, three hundred forty".