238480639 has 2 divisors, whose sum is σ = 238480640. Its totient is φ = 238480638.

The previous prime is 238480621. The next prime is 238480661. The reversal of 238480639 is 936084832.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 238480639 - 2¹⁵ = 238447871 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 238480595 and 238480604.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (238480339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119240319 + 119240320.

It is an arithmetic number, because the mean of its divisors is an integer number (119240320).

Almost surely, 2^238480639 is an apocalyptic number.

238480639 is a deficient number, since it is larger than the sum of its proper divisors (1).

238480639 is an equidigital number, since it uses as much as digits as its factorization.

238480639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 248832, while the sum is 43.

The square root of 238480639 is about 15442.8183632393. The cubic root of 238480639 is about 620.1323330084.

The spelling of 238480639 in words is "two hundred thirty-eight million, four hundred eighty thousand, six hundred thirty-nine".