39896018 has 4 divisors (see below), whose sum is σ = 59844030. Its totient is φ = 19948008.

The previous prime is 39896011. The next prime is 39896023. The reversal of 39896018 is 81069893.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81069893 = 229 ⋅354017.

It can be written as a sum of positive squares in only one way, i.e., 24631369 + 15264649 = 4963^2 + 3907^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 39896018.

It is not an unprimeable number, because it can be changed into a prime (39896011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9974003 + ... + 9974006.

Almost surely, 2^39896018 is an apocalyptic number.

39896018 is a deficient number, since it is larger than the sum of its proper divisors (19948012).

39896018 is a wasteful number, since it uses less digits than its factorization.

39896018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19948011.

The product of its (nonzero) digits is 93312, while the sum is 44.

The square root of 39896018 is about 6316.3294720906. The cubic root of 39896018 is about 341.6985876449.

The spelling of 39896018 in words is "thirty-nine million, eight hundred ninety-six thousand, eighteen".