438649323 has 16 divisors (see below), whose sum is σ = 682060800. Its totient is φ = 250656168.

The previous prime is 438649301. The next prime is 438649327. The reversal of 438649323 is 323946834.

It is not a de Polignac number, because 438649323 - 2⁶ = 438649259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (438649327) 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, 212115 + ... + 214172.

It is an arithmetic number, because the mean of its divisors is an integer number (42628800).

Almost surely, 2^438649323 is an apocalyptic number.

438649323 is a deficient number, since it is larger than the sum of its proper divisors (243411477).

438649323 is an equidigital number, since it uses as much as digits as its factorization.

438649323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426311 (or 426297 counting only the distinct ones).

The product of its digits is 373248, while the sum is 42.

The square root of 438649323 is about 20943.9567178697. The cubic root of 438649323 is about 759.8114277072.

The spelling of 438649323 in words is "four hundred thirty-eight million, six hundred forty-nine thousand, three hundred twenty-three".