238749493 has 12 divisors (see below), whose sum is σ = 248842020. Its totient is φ = 229018752.

The previous prime is 238749491. The next prime is 238749503. The reversal of 238749493 is 394947832.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 27279729 + 211469764 = 5223^2 + 14542^2 .

It is not a de Polignac number, because 238749493 - 2¹ = 238749491 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238749491) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 98743 + ... + 101131.

It is an arithmetic number, because the mean of its divisors is an integer number (20736835).

Almost surely, 2^238749493 is an apocalyptic number.

It is an amenable number.

238749493 is a deficient number, since it is larger than the sum of its proper divisors (10092527).

238749493 is an equidigital number, since it uses as much as digits as its factorization.

238749493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2536 (or 2499 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 49.

The square root of 238749493 is about 15451.5207342190. The cubic root of 238749493 is about 620.3652833575.

The spelling of 238749493 in words is "two hundred thirty-eight million, seven hundred forty-nine thousand, four hundred ninety-three".