102489938 has 8 divisors (see below), whose sum is σ = 154141680. Its totient is φ = 51109380.

The previous prime is 102489913. The next prime is 102489949. The reversal of 102489938 is 839984201.

It is a happy number.

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66848 + ... + 68363.

It is an arithmetic number, because the mean of its divisors is an integer number (19267710).

Almost surely, 2^102489938 is an apocalyptic number.

102489938 is a deficient number, since it is larger than the sum of its proper divisors (51651742).

102489938 is a wasteful number, since it uses less digits than its factorization.

102489938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135592.

The product of its (nonzero) digits is 124416, while the sum is 44.

The square root of 102489938 is about 10123.7314267023. The cubic root of 102489938 is about 467.9797669437.

The spelling of 102489938 in words is "one hundred two million, four hundred eighty-nine thousand, nine hundred thirty-eight".