39980378 has 8 divisors (see below), whose sum is σ = 60132468. Its totient is φ = 19936224.

The previous prime is 39980363. The next prime is 39980401. The reversal of 39980378 is 87308993.

It can be written as a sum of positive squares in 2 ways, for example, as 39980329 + 49 = 6323^2 + 7^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

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 in 3 ways as a sum of consecutive naturals, for example, 26051 + ... + 27542.

Almost surely, 2^39980378 is an apocalyptic number.

39980378 is a deficient number, since it is larger than the sum of its proper divisors (20152090).

39980378 is a wasteful number, since it uses less digits than its factorization.

39980378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53968.

The product of its (nonzero) digits is 326592, while the sum is 47.

The square root of 39980378 is about 6323.0038747418. The cubic root of 39980378 is about 341.9392582753.

The spelling of 39980378 in words is "thirty-nine million, nine hundred eighty thousand, three hundred seventy-eight".