438308212 has 24 divisors (see below), whose sum is σ = 812839104. Its totient is φ = 206090112.

The previous prime is 438308203. The next prime is 438308231. The reversal of 438308212 is 212803834.

It is a super-2 number, since 2×438308212² = 384228177413273888, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119713 + ... + 123319.

It is an arithmetic number, because the mean of its divisors is an integer number (33868296).

Almost surely, 2^438308212 is an apocalyptic number.

It is an amenable number.

438308212 is a deficient number, since it is larger than the sum of its proper divisors (374530892).

438308212 is a wasteful number, since it uses less digits than its factorization.

438308212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5415 (or 5413 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 438308212 is about 20935.8117110371. The cubic root of 438308212 is about 759.6144235293.

The spelling of 438308212 in words is "four hundred thirty-eight million, three hundred eight thousand, two hundred twelve".