438619340 has 24 divisors (see below), whose sum is σ = 922743360. Its totient is φ = 175134848.

The previous prime is 438619339. The next prime is 438619343. The reversal of 438619340 is 43916834.

It is a junction number, because it is equal to n+sod(n) for n = 438619294 and 438619303.

It is not an unprimeable number, because it can be changed into a prime (438619343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7892 + ... + 30651.

It is an arithmetic number, because the mean of its divisors is an integer number (38447640).

Almost surely, 2^438619340 is an apocalyptic number.

It is an amenable number.

438619340 is an abundant number, since it is smaller than the sum of its proper divisors (484124020).

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

438619340 is a wasteful number, since it uses less digits than its factorization.

438619340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39121 (or 39119 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 438619340 is about 20943.2409144335. The cubic root of 438619340 is about 759.7941155143.

The spelling of 438619340 in words is "four hundred thirty-eight million, six hundred nineteen thousand, three hundred forty".