39382987 has 4 divisors (see below), whose sum is σ = 45009136. Its totient is φ = 33756840.

The previous prime is 39382963. The next prime is 39383023. The reversal of 39382987 is 78928393.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 39382987 - 2⁷ = 39382859 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 39382987.

It is not an unprimeable number, because it can be changed into a prime (39385987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2813064 + ... + 2813077.

It is an arithmetic number, because the mean of its divisors is an integer number (11252284).

Almost surely, 2^39382987 is an apocalyptic number.

39382987 is a deficient number, since it is larger than the sum of its proper divisors (5626149).

39382987 is an equidigital number, since it uses as much as digits as its factorization.

39382987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5626148.

The product of its digits is 653184, while the sum is 49.

The square root of 39382987 is about 6275.5865861288. The cubic root of 39382987 is about 340.2276071139.

The spelling of 39382987 in words is "thirty-nine million, three hundred eighty-two thousand, nine hundred eighty-seven".