40380517 has 2 divisors, whose sum is σ = 40380518. Its totient is φ = 40380516.

The previous prime is 40380481. The next prime is 40380563. The reversal of 40380517 is 71508304.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29582721 + 10797796 = 5439^2 + 3286^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40380517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40380217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20190258 + 20190259.

It is an arithmetic number, because the mean of its divisors is an integer number (20190259).

Almost surely, 2^40380517 is an apocalyptic number.

It is an amenable number.

40380517 is a deficient number, since it is larger than the sum of its proper divisors (1).

40380517 is an equidigital number, since it uses as much as digits as its factorization.

40380517 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 40380517 is about 6354.5666256638. The cubic root of 40380517 is about 343.0762268004.

The spelling of 40380517 in words is "forty million, three hundred eighty thousand, five hundred seventeen".