3898 has 4 divisors (see below), whose sum is σ = 5850.
Its totient is φ = 1948.
The previous prime is 3889. The next prime is 3907. The reversal of 3898 is 8983.
It can be divided in two parts, 38 and 98, that added together give a triangular number (136 = T16).
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8983 = 13 ⋅691.
It is an interprime number because it is at equal distance from previous prime (3889) and next prime (3907).
It can be written as a sum of positive squares in only one way, i.e., 2809 + 1089 = 53^2 + 33^2
It is an alternating number because its digits alternate between odd and even.
It is a plaindrome in base 15.
It is a nialpdrome in base 9.
It is an unprimeable number.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 973 + ... + 976.
23898 is an apocalyptic number.
3898 is a deficient number, since it is larger than the sum of its proper divisors (1952).
3898 is a wasteful number, since it uses less digits than its factorization.
3898 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1951.
The product of its digits is 1728, while the sum is 28.
The square root of 3898 is about 62.4339651152.
The cubic root of 3898 is about 15.7379180038.
The spelling of 3898 in words is "three thousand, eight hundred ninety-eight".