438757385 has 16 divisors (see below), whose sum is σ = 594181440. Its totient is φ = 308091840.

The previous prime is 438757357. The next prime is 438757387. The reversal of 438757385 is 583757834.

It is a happy number.

It is not a de Polignac number, because 438757385 - 2¹⁶ = 438691849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (438757387) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135947 + ... + 139136.

It is an arithmetic number, because the mean of its divisors is an integer number (37136340).

Almost surely, 2^438757385 is an apocalyptic number.

It is an amenable number.

438757385 is a deficient number, since it is larger than the sum of its proper divisors (155424055).

438757385 is a wasteful number, since it uses less digits than its factorization.

438757385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275128.

The product of its digits is 2822400, while the sum is 50.

The square root of 438757385 is about 20946.5363485231. The cubic root of 438757385 is about 759.8738161929.

The spelling of 438757385 in words is "four hundred thirty-eight million, seven hundred fifty-seven thousand, three hundred eighty-five".