7898559901 has 4 divisors (see below), whose sum is σ = 8314273600. Its totient is φ = 7482846204.

The previous prime is 7898559899. The next prime is 7898559913. The reversal of 7898559901 is 1099558987.

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 not a de Polignac number, because 7898559901 - 2¹ = 7898559899 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7898559901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7898559931) 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, 207856821 + ... + 207856858.

It is an arithmetic number, because the mean of its divisors is an integer number (2078568400).

Almost surely, 2^7898559901 is an apocalyptic number.

It is an amenable number.

7898559901 is a deficient number, since it is larger than the sum of its proper divisors (415713699).

7898559901 is a wasteful number, since it uses less digits than its factorization.

7898559901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415713698.

The product of its (nonzero) digits is 8164800, while the sum is 61.

The square root of 7898559901 is about 88873.8426141235. The cubic root of 7898559901 is about 1991.5106750824.

The spelling of 7898559901 in words is "seven billion, eight hundred ninety-eight million, five hundred fifty-nine thousand, nine hundred one".