7978338797 has 8 divisors (see below), whose sum is σ = 9373153440. Its totient is φ = 6695109360.

The previous prime is 7978338793. The next prime is 7978338803.

7978338797 is nontrivially palindromic in base 10.

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 7978338797 - 2² = 7978338793 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7978338791) 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, 27896147 + ... + 27896432.

It is an arithmetic number, because the mean of its divisors is an integer number (1171644180).

Almost surely, 2^7978338797 is an apocalyptic number.

It is an amenable number.

7978338797 is a deficient number, since it is larger than the sum of its proper divisors (1394814643).

7978338797 is a wasteful number, since it uses less digits than its factorization.

7978338797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55792603.

The product of its digits is 112021056, while the sum is 68.

The square root of 7978338797 is about 89321.5472156635. The cubic root of 7978338797 is about 1998.1932681014.

The spelling of 7978338797 in words is "seven billion, nine hundred seventy-eight million, three hundred thirty-eight thousand, seven hundred ninety-seven".