7979409801 has 24 divisors (see below), whose sum is σ = 12576522816. Its totient is φ = 4834887840.

The previous prime is 7979409719. The next prime is 7979409811. The reversal of 7979409801 is 1089049797.

It is not a de Polignac number, because 7979409801 - 2¹³ = 7979401609 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7979409811) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 669571 + ... + 681383.

It is an arithmetic number, because the mean of its divisors is an integer number (524021784).

Almost surely, 2^7979409801 is an apocalyptic number.

It is an amenable number.

7979409801 is a deficient number, since it is larger than the sum of its proper divisors (4597113015).

7979409801 is a wasteful number, since it uses less digits than its factorization.

7979409801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18653 (or 18650 counting only the distinct ones).

The product of its (nonzero) digits is 1143072, while the sum is 54.

The square root of 7979409801 is about 89327.5422308260. The cubic root of 7979409801 is about 1998.2826759044.

The spelling of 7979409801 in words is "seven billion, nine hundred seventy-nine million, four hundred nine thousand, eight hundred one".