39694949694 has 64 divisors (see below), whose sum is σ = 92093760000. Its totient is φ = 12649830336.

The previous prime is 39694949689. The next prime is 39694949699. The reversal of 39694949694 is 49694949693.

39694949694 is a `hidden beast` number, since 3 + 9 + 6 + 9 + 49 + 496 + 94 = 666.

39694949694 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (39694949689) and next prime (39694949699).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39694949699) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2778682 + ... + 2792930.

It is an arithmetic number, because the mean of its divisors is an integer number (1438965000).

Almost surely, 2^39694949694 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39694949694, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46046880000).

39694949694 is an abundant number, since it is smaller than the sum of its proper divisors (52398810306).

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

39694949694 is a wasteful number, since it uses less digits than its factorization.

39694949694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16526 (or 16520 counting only the distinct ones).

The product of its digits is 408146688, while the sum is 72.

Subtracting 39694949694 from its reverse (49694949693), we obtain a palindrome (9999999999).

The spelling of 39694949694 in words is "thirty-nine billion, six hundred ninety-four million, nine hundred forty-nine thousand, six hundred ninety-four".