39734393958 has 96 divisors (see below), whose sum is σ = 102839832576. Its totient is φ = 10840889664.

The previous prime is 39734393903. The next prime is 39734393969. The reversal of 39734393958 is 85939343793.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 39734393895 and 39734393904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1765291 + ... + 1787657.

It is an arithmetic number, because the mean of its divisors is an integer number (1071248256).

Almost surely, 2^39734393958 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39734393958, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51419916288).

39734393958 is an abundant number, since it is smaller than the sum of its proper divisors (63105438618).

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

39734393958 is a wasteful number, since it uses less digits than its factorization.

39734393958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23018 (or 23015 counting only the distinct ones).

The product of its digits is 66134880, while the sum is 63.

The spelling of 39734393958 in words is "thirty-nine billion, seven hundred thirty-four million, three hundred ninety-three thousand, nine hundred fifty-eight".