39980447 has 8 divisors (see below), whose sum is σ = 45588816. Its totient is φ = 34733952.

The previous prime is 39980407. The next prime is 39980449. The reversal of 39980447 is 74408993.

39980447 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 39980447 - 2¹⁶ = 39914911 is a prime.

It is a super-2 number, since 2×39980447² = 3196872284639618, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 39980398 and 39980407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39980449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90233 + ... + 90674.

It is an arithmetic number, because the mean of its divisors is an integer number (5698602).

Almost surely, 2^39980447 is an apocalyptic number.

39980447 is a deficient number, since it is larger than the sum of its proper divisors (5608369).

39980447 is a wasteful number, since it uses less digits than its factorization.

39980447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180937.

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 39980447 is about 6323.0093310069. The cubic root of 39980447 is about 341.9394549868.

The spelling of 39980447 in words is "thirty-nine million, nine hundred eighty thousand, four hundred forty-seven".