39418 has 4 divisors (see below), whose sum is σ = 59130. Its totient is φ = 19708.

The previous prime is 39409. The next prime is 39419. The reversal of 39418 is 81493.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81493 = 227 ⋅359.

It can be written as a sum of positive squares in only one way, i.e., 33489 + 5929 = 183^2 + 77^2 .

It is a junction number, because it is equal to n+sod(n) for n = 39392 and 39401.

It is not an unprimeable number, because it can be changed into a prime (39419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9853 + ... + 9856.

2³⁹⁴¹⁸ is an apocalyptic number.

39418 is a deficient number, since it is larger than the sum of its proper divisors (19712).

39418 is a wasteful number, since it uses less digits than its factorization.

39418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19711.

The product of its digits is 864, while the sum is 25.

The square root of 39418 is about 198.5396685804. The cubic root of 39418 is about 34.0328402421.

Subtracting from 39418 its sum of digits (25), we obtain a palindrome (39393).

The spelling of 39418 in words is "thirty-nine thousand, four hundred eighteen".