238992493 has 2 divisors, whose sum is σ = 238992494. Its totient is φ = 238992492.

The previous prime is 238992491. The next prime is 238992499. The reversal of 238992493 is 394299832.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 233875849 + 5116644 = 15293^2 + 2262^2 .

It is a cyclic number.

It is not a de Polignac number, because 238992493 - 2¹ = 238992491 is a prime.

Together with 238992491, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (238992491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119496246 + 119496247.

It is an arithmetic number, because the mean of its divisors is an integer number (119496247).

Almost surely, 2^238992493 is an apocalyptic number.

It is an amenable number.

238992493 is a deficient number, since it is larger than the sum of its proper divisors (1).

238992493 is an equidigital number, since it uses as much as digits as its factorization.

238992493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 839808, while the sum is 49.

The square root of 238992493 is about 15459.3820381023. The cubic root of 238992493 is about 620.5756819175.

The spelling of 238992493 in words is "two hundred thirty-eight million, nine hundred ninety-two thousand, four hundred ninety-three".