39117844420 has 24 divisors (see below), whose sum is σ = 82152302400. Its totient is φ = 15646217952.

The previous prime is 39117844321. The next prime is 39117844429. The reversal of 39117844420 is 2444871193.

It is not an unprimeable number, because it can be changed into a prime (39117844429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 368071 + ... + 462289.

It is an arithmetic number, because the mean of its divisors is an integer number (3423012600).

Almost surely, 2^39117844420 is an apocalyptic number.

It is an amenable number.

39117844420 is an abundant number, since it is smaller than the sum of its proper divisors (43034457980).

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

39117844420 is a wasteful number, since it uses less digits than its factorization.

39117844420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114987 (or 114985 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 43.

The spelling of 39117844420 in words is "thirty-nine billion, one hundred seventeen million, eight hundred forty-four thousand, four hundred twenty".