39713971 has 24 divisors (see below), whose sum is σ = 46689264. Its totient is φ = 33488640.

The previous prime is 39713969. The next prime is 39713977. The reversal of 39713971 is 17931793.

It is a happy number.

It is not a de Polignac number, because 39713971 - 2¹ = 39713969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39713977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 289815 + ... + 289951.

It is an arithmetic number, because the mean of its divisors is an integer number (1945386).

Almost surely, 2^39713971 is an apocalyptic number.

39713971 is a deficient number, since it is larger than the sum of its proper divisors (6975293).

39713971 is a wasteful number, since it uses less digits than its factorization.

39713971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259 (or 240 counting only the distinct ones).

The product of its digits is 35721, while the sum is 40.

The square root of 39713971 is about 6301.9021731538. The cubic root of 39713971 is about 341.1780673744.

The spelling of 39713971 in words is "thirty-nine million, seven hundred thirteen thousand, nine hundred seventy-one".