5079939661 has 2 divisors, whose sum is σ = 5079939662. Its totient is φ = 5079939660.

The previous prime is 5079939611. The next prime is 5079939673. The reversal of 5079939661 is 1669399705.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4977302500 + 102637161 = 70550^2 + 10131^2 .

It is a cyclic number.

It is not a de Polignac number, because 5079939661 - 2⁷ = 5079939533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5079939611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2539969830 + 2539969831.

It is an arithmetic number, because the mean of its divisors is an integer number (2539969831).

Almost surely, 2^5079939661 is an apocalyptic number.

It is an amenable number.

5079939661 is a deficient number, since it is larger than the sum of its proper divisors (1).

5079939661 is an equidigital number, since it uses as much as digits as its factorization.

5079939661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2755620, while the sum is 55.

The square root of 5079939661 is about 71273.6954352726. The cubic root of 5079939661 is about 1719.0408006981.

The spelling of 5079939661 in words is "five billion, seventy-nine million, nine hundred thirty-nine thousand, six hundred sixty-one".