39948251289 has 8 divisors (see below), whose sum is σ = 53313160992. Its totient is φ = 26607754560.

The previous prime is 39948251267. The next prime is 39948251309. The reversal of 39948251289 is 98215284993.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 39948251289 - 2¹¹ = 39948249241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (39948251689) 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 7 ways as a sum of consecutive naturals, for example, 6099424 + ... + 6105969.

It is an arithmetic number, because the mean of its divisors is an integer number (6664145124).

Almost surely, 2^39948251289 is an apocalyptic number.

It is an amenable number.

39948251289 is a deficient number, since it is larger than the sum of its proper divisors (13364909703).

39948251289 is a wasteful number, since it uses less digits than its factorization.

39948251289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12206487.

The product of its digits is 11197440, while the sum is 60.

The spelling of 39948251289 in words is "thirty-nine billion, nine hundred forty-eight million, two hundred fifty-one thousand, two hundred eighty-nine".