438889380 has 24 divisors (see below), whose sum is σ = 1228890432. Its totient is φ = 117037152.

The previous prime is 438889333. The next prime is 438889397. The reversal of 438889380 is 83988834.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3657352 + ... + 3657471.

It is an arithmetic number, because the mean of its divisors is an integer number (51203768).

Almost surely, 2^438889380 is an apocalyptic number.

It is an amenable number.

438889380 is an abundant number, since it is smaller than the sum of its proper divisors (790001052).

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

438889380 is a wasteful number, since it uses less digits than its factorization.

438889380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7314835 (or 7314833 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 51.

The square root of 438889380 is about 20949.6868711683. The cubic root of 438889380 is about 759.9500082537.

The spelling of 438889380 in words is "four hundred thirty-eight million, eight hundred eighty-nine thousand, three hundred eighty".