238951779469 has 16 divisors (see below), whose sum is σ = 268909893504. Its totient is φ = 210675326400.

The previous prime is 238951779463. The next prime is 238951779487. The reversal of 238951779469 is 964977159832.

It is a happy number.

238951779469 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 238951779469 - 2⁹ = 238951778957 is a prime.

It is a super-2 number, since 2×238951779469² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 238951779398 and 238951779407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238951779463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 371662 + ... + 784879.

It is an arithmetic number, because the mean of its divisors is an integer number (16806868344).

Almost surely, 2^238951779469 is an apocalyptic number.

It is an amenable number.

238951779469 is a deficient number, since it is larger than the sum of its proper divisors (29958114035).

238951779469 is a wasteful number, since it uses less digits than its factorization.

238951779469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1157268.

The product of its digits is 205752960, while the sum is 70.

The spelling of 238951779469 in words is "two hundred thirty-eight billion, nine hundred fifty-one million, seven hundred seventy-nine thousand, four hundred sixty-nine".