39914995447 has 4 divisors (see below), whose sum is σ = 39982306320. Its totient is φ = 39847684576.

The previous prime is 39914995433. The next prime is 39914995459. The reversal of 39914995447 is 74459941993.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74459941993 = 50077 ⋅1486909.

It is a cyclic number.

It is not a de Polignac number, because 39914995447 - 2²⁷ = 39780777719 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39914905447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33654547 + ... + 33655732.

It is an arithmetic number, because the mean of its divisors is an integer number (9995576580).

Almost surely, 2^39914995447 is an apocalyptic number.

39914995447 is a deficient number, since it is larger than the sum of its proper divisors (67310873).

39914995447 is an equidigital number, since it uses as much as digits as its factorization.

39914995447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67310872.

The product of its digits is 44089920, while the sum is 64.

The spelling of 39914995447 in words is "thirty-nine billion, nine hundred fourteen million, nine hundred ninety-five thousand, four hundred forty-seven".