39969862849 has 8 divisors (see below), whose sum is σ = 46258069760. Its totient is φ = 33826212576.

The previous prime is 39969862841. The next prime is 39969862859. The reversal of 39969862849 is 94826896993.

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

It is a cyclic number.

It is not a de Polignac number, because 39969862849 - 2³ = 39969862841 is a prime.

It is a super-3 number, since 3×39969862849³ (a number of 33 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (39969862841) 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, 36138564 + ... + 36139669.

It is an arithmetic number, because the mean of its divisors is an integer number (5782258720).

Almost surely, 2^39969862849 is an apocalyptic number.

It is an amenable number.

39969862849 is a deficient number, since it is larger than the sum of its proper divisors (6288206911).

39969862849 is an equidigital number, since it uses as much as digits as its factorization.

39969862849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72278319.

The product of its digits is 362797056, while the sum is 73.

The spelling of 39969862849 in words is "thirty-nine billion, nine hundred sixty-nine million, eight hundred sixty-two thousand, eight hundred forty-nine".