7899213049 has 8 divisors (see below), whose sum is σ = 9722108480. Its totient is φ = 6249926736.

The previous prime is 7899213017. The next prime is 7899213071. The reversal of 7899213049 is 9403129987.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7899213049 - 2⁵ = 7899213017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7899212987 and 7899213005.

It is not an unprimeable number, because it can be changed into a prime (7899213079) 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, 43402179 + ... + 43402360.

It is an arithmetic number, because the mean of its divisors is an integer number (1215263560).

Almost surely, 2^7899213049 is an apocalyptic number.

It is an amenable number.

7899213049 is a deficient number, since it is larger than the sum of its proper divisors (1822895431).

7899213049 is a wasteful number, since it uses less digits than its factorization.

7899213049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86804559.

The product of its (nonzero) digits is 979776, while the sum is 52.

The square root of 7899213049 is about 88877.5171176603. The cubic root of 7899213049 is about 1991.5655675935.

The spelling of 7899213049 in words is "seven billion, eight hundred ninety-nine million, two hundred thirteen thousand, forty-nine".