238504435447 has 2 divisors, whose sum is σ = 238504435448. Its totient is φ = 238504435446.

The previous prime is 238504435427. The next prime is 238504435457. The reversal of 238504435447 is 744534405832.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 238504435447 - 2²³ = 238496046839 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 238504435447.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (238504435417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119252217723 + 119252217724.

It is an arithmetic number, because the mean of its divisors is an integer number (119252217724).

Almost surely, 2^238504435447 is an apocalyptic number.

238504435447 is a deficient number, since it is larger than the sum of its proper divisors (1).

238504435447 is an equidigital number, since it uses as much as digits as its factorization.

238504435447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6451200, while the sum is 49.

The spelling of 238504435447 in words is "two hundred thirty-eight billion, five hundred four million, four hundred thirty-five thousand, four hundred forty-seven".