39970981041 has 4 divisors (see below), whose sum is σ = 53294641392. Its totient is φ = 26647320692.

The previous prime is 39970981003. The next prime is 39970981049. The reversal of 39970981041 is 14018907993.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14018907993 = 3 ⋅4672969331.

It is a cyclic number.

It is not a de Polignac number, because 39970981041 - 2⁶ = 39970980977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (39970981049) by changing a digit.

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, 6661830171 + ... + 6661830176.

It is an arithmetic number, because the mean of its divisors is an integer number (13323660348).

Almost surely, 2^39970981041 is an apocalyptic number.

It is an amenable number.

39970981041 is a deficient number, since it is larger than the sum of its proper divisors (13323660351).

39970981041 is a wasteful number, since it uses less digits than its factorization.

39970981041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13323660350.

The product of its (nonzero) digits is 489888, while the sum is 51.

The spelling of 39970981041 in words is "thirty-nine billion, nine hundred seventy million, nine hundred eighty-one thousand, forty-one".