117117977 has 2 divisors, whose sum is σ = 117117978. Its totient is φ = 117117976.

The previous prime is 117117971. The next prime is 117117983. The reversal of 117117977 is 779711711.

It is a balanced prime because it is at equal distance from previous prime (117117971) and next prime (117117983).

It can be written as a sum of positive squares in only one way, i.e., 102799321 + 14318656 = 10139^2 + 3784^2 .

It is a cyclic number.

It is not a de Polignac number, because 117117977 - 2¹⁰ = 117116953 is a prime.

It is not a weakly prime, because it can be changed into another prime (117117971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58558988 + 58558989.

It is an arithmetic number, because the mean of its divisors is an integer number (58558989).

Almost surely, 2^117117977 is an apocalyptic number.

It is an amenable number.

117117977 is a deficient number, since it is larger than the sum of its proper divisors (1).

117117977 is an equidigital number, since it uses as much as digits as its factorization.

117117977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21609, while the sum is 41.

The square root of 117117977 is about 10822.1059410819. The cubic root of 117117977 is about 489.2616632584.

The spelling of 117117977 in words is "one hundred seventeen million, one hundred seventeen thousand, nine hundred seventy-seven".