7987279403 has 8 divisors (see below), whose sum is σ = 8237064960. Its totient is φ = 7741307560.

The previous prime is 7987279309. The next prime is 7987279423. The reversal of 7987279403 is 3049727897.

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 7987279403 - 2²⁰ = 7986230827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7987279423) 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, 949175 + ... + 957552.

It is an arithmetic number, because the mean of its divisors is an integer number (1029633120).

Almost surely, 2^7987279403 is an apocalyptic number.

7987279403 is a deficient number, since it is larger than the sum of its proper divisors (249785557).

7987279403 is a wasteful number, since it uses less digits than its factorization.

7987279403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1906857.

The product of its (nonzero) digits is 5334336, while the sum is 56.

The square root of 7987279403 is about 89371.5805108089. The cubic root of 7987279403 is about 1998.9393879004.

The spelling of 7987279403 in words is "seven billion, nine hundred eighty-seven million, two hundred seventy-nine thousand, four hundred three".