7978701199 has 4 divisors (see below), whose sum is σ = 9118515664. Its totient is φ = 6838886736.

The previous prime is 7978701163. The next prime is 7978701233. The reversal of 7978701199 is 9911078797.

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

It is a cyclic number.

It is not a de Polignac number, because 7978701199 - 2¹³ = 7978693007 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 (7978701139) 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, 569907222 + ... + 569907235.

It is an arithmetic number, because the mean of its divisors is an integer number (2279628916).

Almost surely, 2^7978701199 is an apocalyptic number.

7978701199 is a deficient number, since it is larger than the sum of its proper divisors (1139814465).

7978701199 is a wasteful number, since it uses less digits than its factorization.

7978701199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1139814464.

The product of its (nonzero) digits is 2000376, while the sum is 58.

The square root of 7978701199 is about 89323.5758296767. The cubic root of 7978701199 is about 1998.2235224476.

The spelling of 7978701199 in words is "seven billion, nine hundred seventy-eight million, seven hundred one thousand, one hundred ninety-nine".