438666057 has 16 divisors (see below), whose sum is σ = 651964480. Its totient is φ = 291504096.

The previous prime is 438666029. The next prime is 438666073. The reversal of 438666057 is 750666834.

It is not a de Polignac number, because 438666057 - 2¹⁵ = 438633289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (438666017) 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, 17503 + ... + 34404.

It is an arithmetic number, because the mean of its divisors is an integer number (40747780).

Almost surely, 2^438666057 is an apocalyptic number.

It is an amenable number.

438666057 is a deficient number, since it is larger than the sum of its proper divisors (213298423).

438666057 is a wasteful number, since it uses less digits than its factorization.

438666057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52229 (or 52223 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The square root of 438666057 is about 20944.3562087738. The cubic root of 438666057 is about 759.8210895806.

The spelling of 438666057 in words is "four hundred thirty-eight million, six hundred sixty-six thousand, fifty-seven".