83925005917 has 4 divisors (see below), whose sum is σ = 83928312000. Its totient is φ = 83921699836.

The previous prime is 83925005869. The next prime is 83925005929. The reversal of 83925005917 is 71950052938.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83925005917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83925015917) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1614667 + ... + 1665832.

It is an arithmetic number, because the mean of its divisors is an integer number (20982078000).

Almost surely, 2^83925005917 is an apocalyptic number.

It is an amenable number.

83925005917 is a deficient number, since it is larger than the sum of its proper divisors (3306083).

83925005917 is a wasteful number, since it uses less digits than its factorization.

83925005917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3306082.

The product of its (nonzero) digits is 680400, while the sum is 49.

The spelling of 83925005917 in words is "eighty-three billion, nine hundred twenty-five million, five thousand, nine hundred seventeen".