4709191997 has 4 divisors (see below), whose sum is σ = 4711630140. Its totient is φ = 4706753856.

The previous prime is 4709191979. The next prime is 4709192011. The reversal of 4709191997 is 7991919074.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7991919074 = 2 ⋅3995959537.

It can be written as a sum of positive squares in 2 ways, for example, as 1652097316 + 3057094681 = 40646^2 + 55291^2 .

It is a cyclic number.

It is not a de Polignac number, because 4709191997 - 2¹⁰ = 4709190973 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 (4709191957) 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, 1216172 + ... + 1220037.

It is an arithmetic number, because the mean of its divisors is an integer number (1177907535).

Almost surely, 2^4709191997 is an apocalyptic number.

It is an amenable number.

4709191997 is a deficient number, since it is larger than the sum of its proper divisors (2438143).

4709191997 is a wasteful number, since it uses less digits than its factorization.

4709191997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2438142.

The product of its (nonzero) digits is 1285956, while the sum is 56.

The square root of 4709191997 is about 68623.5527861972. The cubic root of 4709191997 is about 1676.1599743489.

The spelling of 4709191997 in words is "four billion, seven hundred nine million, one hundred ninety-one thousand, nine hundred ninety-seven".