39971196846 has 84 divisors (see below), whose sum is σ = 102788019672. Its totient is φ = 11414571192.

The previous prime is 39971196823. The next prime is 39971196847. The reversal of 39971196846 is 64869117993.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39971196847) by changing a digit.

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 in 41 ways as a sum of consecutive naturals, for example, 20196685 + ... + 20198663.

Almost surely, 2^39971196846 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39971196846, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51394009836).

39971196846 is an abundant number, since it is smaller than the sum of its proper divisors (62816822826).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39971196846 is an frugal number, since it uses more digits than its factorization.

39971196846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3985 (or 1991 counting only the distinct ones).

The product of its digits is 17635968, while the sum is 63.

The spelling of 39971196846 in words is "thirty-nine billion, nine hundred seventy-one million, one hundred ninety-six thousand, eight hundred forty-six".