39898 has 4 divisors (see below), whose sum is σ = 59850. Its totient is φ = 19948.

The previous prime is 39887. The next prime is 39901. The reversal of 39898 is 89893.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 89893 = 241 ⋅373.

It can be written as a sum of positive squares in only one way, i.e., 38809 + 1089 = 197^2 + 33^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9973 + ... + 9976.

2³⁹⁸⁹⁸ is an apocalyptic number.

39898 is a deficient number, since it is larger than the sum of its proper divisors (19952).

39898 is a wasteful number, since it uses less digits than its factorization.

39898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19951.

The product of its digits is 15552, while the sum is 37.

The square root of 39898 is about 199.7448372299. The cubic root of 39898 is about 34.1704245982.

It can be divided in two parts, 398 and 98, that added together give a triangular number (496 = T₃₁).

The spelling of 39898 in words is "thirty-nine thousand, eight hundred ninety-eight".