39791995 has 4 divisors (see below), whose sum is σ = 47750400. Its totient is φ = 31833592.

The previous prime is 39791987. The next prime is 39792007. The reversal of 39791995 is 59919793.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 59919793 = 131 ⋅457403.

It is a cyclic number.

It is not a de Polignac number, because 39791995 - 2³ = 39791987 is a prime.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 3979195 + ... + 3979204.

It is an arithmetic number, because the mean of its divisors is an integer number (11937600).

Almost surely, 2^39791995 is an apocalyptic number.

39791995 is a deficient number, since it is larger than the sum of its proper divisors (7958405).

39791995 is an equidigital number, since it uses as much as digits as its factorization.

39791995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7958404.

The product of its digits is 688905, while the sum is 52.

The square root of 39791995 is about 6308.0896474289. The cubic root of 39791995 is about 341.4013528902.

The spelling of 39791995 in words is "thirty-nine million, seven hundred ninety-one thousand, nine hundred ninety-five".