39912218492 has 6 divisors (see below), whose sum is σ = 69846382368. Its totient is φ = 19956109244.

The previous prime is 39912218473. The next prime is 39912218497. The reversal of 39912218492 is 29481221993.

It is a self number, because there is not a number n which added to its sum of digits gives 39912218492.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39912218497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4989027308 + ... + 4989027315.

It is an arithmetic number, because the mean of its divisors is an integer number (11641063728).

Almost surely, 2^39912218492 is an apocalyptic number.

It is an amenable number.

39912218492 is a deficient number, since it is larger than the sum of its proper divisors (29934163876).

39912218492 is a wasteful number, since it uses less digits than its factorization.

39912218492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9978054627 (or 9978054625 counting only the distinct ones).

The product of its digits is 559872, while the sum is 50.

The spelling of 39912218492 in words is "thirty-nine billion, nine hundred twelve million, two hundred eighteen thousand, four hundred ninety-two".