60979909 has 2 divisors, whose sum is σ = 60979910. Its totient is φ = 60979908.

The previous prime is 60979907. The next prime is 60979921. The reversal of 60979909 is 90997906.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39727809 + 21252100 = 6303^2 + 4610^2 .

It is a cyclic number.

It is not a de Polignac number, because 60979909 - 2¹ = 60979907 is a prime.

Together with 60979907, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (60979903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30489954 + 30489955.

It is an arithmetic number, because the mean of its divisors is an integer number (30489955).

Almost surely, 2^60979909 is an apocalyptic number.

It is an amenable number.

60979909 is a deficient number, since it is larger than the sum of its proper divisors (1).

60979909 is an equidigital number, since it uses as much as digits as its factorization.

60979909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 275562, while the sum is 49.

The square root of 60979909 is about 7808.9633755064. The cubic root of 60979909 is about 393.6064959882.

The spelling of 60979909 in words is "sixty million, nine hundred seventy-nine thousand, nine hundred nine".