39980670746 has 4 divisors (see below), whose sum is σ = 59971006122. Its totient is φ = 19990335372.

The previous prime is 39980670721. The next prime is 39980670749. The reversal of 39980670746 is 64707608993.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64707608993 = 5791 ⋅11173823.

It can be written as a sum of positive squares in only one way, i.e., 31173786721 + 8806884025 = 176561^2 + 93845^2 .

It is not an unprimeable number, because it can be changed into a prime (39980670749) 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 as a sum of consecutive naturals, namely, 9995167685 + ... + 9995167688.

Almost surely, 2^39980670746 is an apocalyptic number.

39980670746 is a deficient number, since it is larger than the sum of its proper divisors (19990335376).

39980670746 is a wasteful number, since it uses less digits than its factorization.

39980670746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19990335375.

The product of its (nonzero) digits is 13716864, while the sum is 59.

The spelling of 39980670746 in words is "thirty-nine billion, nine hundred eighty million, six hundred seventy thousand, seven hundred forty-six".