438706894 has 8 divisors (see below), whose sum is σ = 661864680. Its totient is φ = 218085336.

The previous prime is 438706861. The next prime is 438706907. The reversal of 438706894 is 498607834.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-4 number, since 4×438706894⁴ (a number of 36 digits) contains 4444 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 (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 633624 + ... + 634315.

It is an arithmetic number, because the mean of its divisors is an integer number (82733085).

Almost surely, 2^438706894 is an apocalyptic number.

438706894 is a deficient number, since it is larger than the sum of its proper divisors (223157786).

438706894 is a wasteful number, since it uses less digits than its factorization.

438706894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1268114.

The product of its (nonzero) digits is 1161216, while the sum is 49.

The square root of 438706894 is about 20945.3310787870. The cubic root of 438706894 is about 759.8446670078.

The spelling of 438706894 in words is "four hundred thirty-eight million, seven hundred six thousand, eight hundred ninety-four".