39880517 has 2 divisors, whose sum is σ = 39880518. Its totient is φ = 39880516.

The previous prime is 39880501. The next prime is 39880549. The reversal of 39880517 is 71508893.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32649796 + 7230721 = 5714^2 + 2689^2 .

It is an emirp because it is prime and its reverse (71508893) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 39880517 - 2⁴ = 39880501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39880567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19940258 + 19940259.

It is an arithmetic number, because the mean of its divisors is an integer number (19940259).

Almost surely, 2^39880517 is an apocalyptic number.

It is an amenable number.

39880517 is a deficient number, since it is larger than the sum of its proper divisors (1).

39880517 is an equidigital number, since it uses as much as digits as its factorization.

39880517 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 41.

The square root of 39880517 is about 6315.1022952918. The cubic root of 39880517 is about 341.6543279568.

The spelling of 39880517 in words is "thirty-nine million, eight hundred eighty thousand, five hundred seventeen".