939686897856 has 224 divisors, whose sum is σ = 2938304512000. Its totient is φ = 259359667200.

The previous prime is 939686897843. The next prime is 939686897873. The reversal of 939686897856 is 658798686939.

It is a tau number, because it is divible by the number of its divisors (224).

It is a super-2 number, since 2×939686897856² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (84).

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 23770395 + ... + 23809893.

Almost surely, 2^939686897856 is an apocalyptic number.

939686897856 is a gapful number since it is divisible by the number (96) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 939686897856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1469152256000).

939686897856 is an abundant number, since it is smaller than the sum of its proper divisors (1998617614144).

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

939686897856 is a wasteful number, since it uses less digits than its factorization.

939686897856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40123 (or 40113 counting only the distinct ones).

The product of its digits is 8465264640, while the sum is 84.

The spelling of 939686897856 in words is "nine hundred thirty-nine billion, six hundred eighty-six million, eight hundred ninety-seven thousand, eight hundred fifty-six".