Search a number
239808493 = 1672336163
BaseRepresentation
bin11100100101100…
…10111111101101
3121201020112102001
432102302333231
5442342332433
635443532301
75641224061
oct1622627755
9551215361
10239808493
11113402741
126838a091
133a8b4922
1423bc5aa1
15160be57d
hexe4b2fed

239808493 has 8 divisors (see below), whose sum is σ = 242319168. Its totient is φ = 237310944.

The previous prime is 239808479. The next prime is 239808559. The reversal of 239808493 is 394808932.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 239808493 - 25 = 239808461 is a prime.

It is a super-2 number, since 2×2398084932 = 115016226629862098, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (239808193) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35830 + ... + 41992.

It is an arithmetic number, because the mean of its divisors is an integer number (30289896).

Almost surely, 2239808493 is an apocalyptic number.

It is an amenable number.

239808493 is a deficient number, since it is larger than the sum of its proper divisors (2510675).

239808493 is a wasteful number, since it uses less digits than its factorization.

239808493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6563.

The product of its (nonzero) digits is 373248, while the sum is 46.

The square root of 239808493 is about 15485.7512894919. The cubic root of 239808493 is about 621.2811636574.

The spelling of 239808493 in words is "two hundred thirty-nine million, eight hundred eight thousand, four hundred ninety-three".