7898040001 has 4 divisors (see below), whose sum is σ = 7898254272. Its totient is φ = 7897825732.

The previous prime is 7898039951. The next prime is 7898040053. The reversal of 7898040001 is 1000408987.

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 7898040001 - 2⁷ = 7898039873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7898040301) 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, 36181 + ... + 130786.

It is an arithmetic number, because the mean of its divisors is an integer number (1974563568).

Almost surely, 2^7898040001 is an apocalyptic number.

It is an amenable number.

7898040001 is a deficient number, since it is larger than the sum of its proper divisors (214271).

7898040001 is a wasteful number, since it uses less digits than its factorization.

7898040001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214270.

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 7898040001 is about 88870.9176333856. The cubic root of 7898040001 is about 1991.4669789686.

Adding to 7898040001 its reverse (1000408987), we get a palindrome (8898448988).

The spelling of 7898040001 in words is "seven billion, eight hundred ninety-eight million, forty thousand, one".