39985973098 has 4 divisors (see below), whose sum is σ = 59978959650. Its totient is φ = 19992986548.

The previous prime is 39985973039. The next prime is 39985973101. The reversal of 39985973098 is 89037958993.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 89037958993 = 1301 ⋅68438093.

It can be written as a sum of positive squares in only one way, i.e., 36159684649 + 3826288449 = 190157^2 + 61857^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9996493273 + ... + 9996493276.

Almost surely, 2^39985973098 is an apocalyptic number.

39985973098 is a deficient number, since it is larger than the sum of its proper divisors (19992986552).

39985973098 is a wasteful number, since it uses less digits than its factorization.

39985973098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19992986551.

The product of its (nonzero) digits is 132269760, while the sum is 70.

The spelling of 39985973098 in words is "thirty-nine billion, nine hundred eighty-five million, nine hundred seventy-three thousand, ninety-eight".