7899391041 has 4 divisors (see below), whose sum is σ = 10532521392. Its totient is φ = 5266260692.

The previous prime is 7899390977. The next prime is 7899391061. The reversal of 7899391041 is 1401939987.

It is a happy number.

7899391041 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 7899391041 - 2⁶ = 7899390977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7899391061) 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, 1316565171 + ... + 1316565176.

It is an arithmetic number, because the mean of its divisors is an integer number (2633130348).

Almost surely, 2^7899391041 is an apocalyptic number.

It is an amenable number.

7899391041 is a deficient number, since it is larger than the sum of its proper divisors (2633130351).

7899391041 is a wasteful number, since it uses less digits than its factorization.

7899391041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2633130350.

The product of its (nonzero) digits is 489888, while the sum is 51.

The square root of 7899391041 is about 88878.5184451226. The cubic root of 7899391041 is about 1991.5805260488.

The spelling of 7899391041 in words is "seven billion, eight hundred ninety-nine million, three hundred ninety-one thousand, forty-one".