139898 has 8 divisors (see below), whose sum is σ = 228960. Its totient is φ = 63580.

The previous prime is 139891. The next prime is 139901. The reversal of 139898 is 898931.

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

It is a plaindrome in base 16.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 139898.

It is not an unprimeable number, because it can be changed into a prime (139891) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3158 + ... + 3201.

It is an arithmetic number, because the mean of its divisors is an integer number (28620).

2¹³⁹⁸⁹⁸ is an apocalyptic number.

139898 is a deficient number, since it is larger than the sum of its proper divisors (89062).

139898 is a wasteful number, since it uses less digits than its factorization.

139898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6372.

The product of its digits is 15552, while the sum is 38.

The square root of 139898 is about 374.0294106083. The cubic root of 139898 is about 51.9123276119.

The spelling of 139898 in words is "one hundred thirty-nine thousand, eight hundred ninety-eight".