40382387 has 2 divisors, whose sum is σ = 40382388. Its totient is φ = 40382386.

The previous prime is 40382369. The next prime is 40382389. The reversal of 40382387 is 78328304.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40382387 is a prime.

Together with 40382389, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40382389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20191193 + 20191194.

It is an arithmetic number, because the mean of its divisors is an integer number (20191194).

Almost surely, 2^40382387 is an apocalyptic number.

40382387 is a deficient number, since it is larger than the sum of its proper divisors (1).

40382387 is an equidigital number, since it uses as much as digits as its factorization.

40382387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 40382387 is about 6354.7137622398. The cubic root of 40382387 is about 343.0815226104.

The spelling of 40382387 in words is "forty million, three hundred eighty-two thousand, three hundred eighty-seven".