7899420803 has 4 divisors (see below), whose sum is σ = 7952437200. Its totient is φ = 7846404408.

The previous prime is 7899420799. The next prime is 7899420833. The reversal of 7899420803 is 3080249987.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 7899420803 - 2² = 7899420799 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7899420833) 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, 26507975 + ... + 26508272.

It is an arithmetic number, because the mean of its divisors is an integer number (1988109300).

Almost surely, 2^7899420803 is an apocalyptic number.

7899420803 is a deficient number, since it is larger than the sum of its proper divisors (53016397).

7899420803 is a wasteful number, since it uses less digits than its factorization.

7899420803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53016396.

The product of its (nonzero) digits is 870912, while the sum is 50.

The square root of 7899420803 is about 88878.6858757486. The cubic root of 7899420803 is about 1991.5830272267.

The spelling of 7899420803 in words is "seven billion, eight hundred ninety-nine million, four hundred twenty thousand, eight hundred three".