238769947438 has 8 divisors (see below), whose sum is σ = 390714459480. Its totient is φ = 108531794280.

The previous prime is 238769947433. The next prime is 238769947447. The reversal of 238769947438 is 834749967832.

It is a happy number.

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

It is a super-2 number, since 2×238769947438² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238769947433) 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, 5426589693 + ... + 5426589736.

It is an arithmetic number, because the mean of its divisors is an integer number (48839307435).

Almost surely, 2^238769947438 is an apocalyptic number.

238769947438 is a deficient number, since it is larger than the sum of its proper divisors (151944512042).

238769947438 is a wasteful number, since it uses less digits than its factorization.

238769947438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10853179442.

The product of its digits is 438939648, while the sum is 70.

The spelling of 238769947438 in words is "two hundred thirty-eight billion, seven hundred sixty-nine million, nine hundred forty-seven thousand, four hundred thirty-eight".