438238426 has 8 divisors (see below), whose sum is σ = 663740064. Its totient is φ = 216991740.

The previous prime is 438238421. The next prime is 438238429. The reversal of 438238426 is 624832834.

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

It is not an unprimeable number, because it can be changed into a prime (438238421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1063480 + ... + 1063891.

It is an arithmetic number, because the mean of its divisors is an integer number (82967508).

Almost surely, 2^438238426 is an apocalyptic number.

438238426 is a deficient number, since it is larger than the sum of its proper divisors (225501638).

438238426 is a wasteful number, since it uses less digits than its factorization.

438238426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2127476.

The product of its digits is 221184, while the sum is 40.

The square root of 438238426 is about 20934.1449789572. The cubic root of 438238426 is about 759.5741069481.

The spelling of 438238426 in words is "four hundred thirty-eight million, two hundred thirty-eight thousand, four hundred twenty-six".