7939606897 has 4 divisors (see below), whose sum is σ = 7940378340. Its totient is φ = 7938835456.

The previous prime is 7939606891. The next prime is 7939606933. The reversal of 7939606897 is 7986069397.

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

It can be written as a sum of positive squares in 2 ways, for example, as 7019758656 + 919848241 = 83784^2 + 30329^2 .

It is a cyclic number.

It is not a de Polignac number, because 7939606897 - 2³ = 7939606889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7939606891) 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, 370072 + ... + 390937.

It is an arithmetic number, because the mean of its divisors is an integer number (1985094585).

Almost surely, 2^7939606897 is an apocalyptic number.

It is an amenable number.

7939606897 is a deficient number, since it is larger than the sum of its proper divisors (771443).

7939606897 is a wasteful number, since it uses less digits than its factorization.

7939606897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 771442.

The product of its (nonzero) digits is 30862944, while the sum is 64.

The square root of 7939606897 is about 89104.4718125864. The cubic root of 7939606897 is about 1994.9545237046.

The spelling of 7939606897 in words is "seven billion, nine hundred thirty-nine million, six hundred six thousand, eight hundred ninety-seven".