39884971 has 12 divisors (see below), whose sum is σ = 48839880. Its totient is φ = 32387040.

The previous prime is 39884969. The next prime is 39884981. The reversal of 39884971 is 17948893.

It is a happy number.

It is not a de Polignac number, because 39884971 - 2¹ = 39884969 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is not an unprimeable number, because it can be changed into a prime (39884981) 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 in 11 ways as a sum of consecutive naturals, for example, 20490 + ... + 22351.

It is an arithmetic number, because the mean of its divisors is an integer number (4069990).

Almost surely, 2^39884971 is an apocalyptic number.

39884971 is a deficient number, since it is larger than the sum of its proper divisors (8954909).

39884971 is a wasteful number, since it uses less digits than its factorization.

39884971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42874 (or 42867 counting only the distinct ones).

The product of its digits is 435456, while the sum is 49.

The square root of 39884971 is about 6315.4549321486. The cubic root of 39884971 is about 341.6670465459.

The spelling of 39884971 in words is "thirty-nine million, eight hundred eighty-four thousand, nine hundred seventy-one".