117777739 has 2 divisors, whose sum is σ = 117777740. Its totient is φ = 117777738.

The previous prime is 117777721. The next prime is 117777743. The reversal of 117777739 is 937777711.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 117777739 - 2¹⁵ = 117744971 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 117777692 and 117777701.

It is not a weakly prime, because it can be changed into another prime (117777799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58888869 + 58888870.

It is an arithmetic number, because the mean of its divisors is an integer number (58888870).

Almost surely, 2^117777739 is an apocalyptic number.

117777739 is a deficient number, since it is larger than the sum of its proper divisors (1).

117777739 is an equidigital number, since it uses as much as digits as its factorization.

117777739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 453789, while the sum is 49.

The square root of 117777739 is about 10852.5452774914. The cubic root of 117777739 is about 490.1786645431.

The spelling of 117777739 in words is "one hundred seventeen million, seven hundred seventy-seven thousand, seven hundred thirty-nine".