39782146 has 4 divisors (see below), whose sum is σ = 59673222. Its totient is φ = 19891072.

The previous prime is 39782131. The next prime is 39782191. The reversal of 39782146 is 64128793.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64128793 = 269 ⋅238397.

It can be written as a sum of positive squares in only one way, i.e., 34093921 + 5688225 = 5839^2 + 2385^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 39782099 and 39782108.

It is an unprimeable number.

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, 9945535 + ... + 9945538.

Almost surely, 2^39782146 is an apocalyptic number.

39782146 is a deficient number, since it is larger than the sum of its proper divisors (19891076).

39782146 is a wasteful number, since it uses less digits than its factorization.

39782146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19891075.

The product of its digits is 72576, while the sum is 40.

The square root of 39782146 is about 6307.3089348786. The cubic root of 39782146 is about 341.3731835781.

The spelling of 39782146 in words is "thirty-nine million, seven hundred eighty-two thousand, one hundred forty-six".