39919966492 has 48 divisors (see below), whose sum is σ = 84237511680. Its totient is φ = 16170408000.

The previous prime is 39919966469. The next prime is 39919966523. The reversal of 39919966492 is 29466991993.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 142242 + ... + 316342.

It is an arithmetic number, because the mean of its divisors is an integer number (1754948160).

Almost surely, 2^39919966492 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39919966492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42118755840).

39919966492 is an abundant number, since it is smaller than the sum of its proper divisors (44317545188).

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

39919966492 is a wasteful number, since it uses less digits than its factorization.

39919966492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174562 (or 174560 counting only the distinct ones).

The product of its digits is 51018336, while the sum is 67.

The spelling of 39919966492 in words is "thirty-nine billion, nine hundred nineteen million, nine hundred sixty-six thousand, four hundred ninety-two".