117028777 has 2 divisors, whose sum is σ = 117028778. Its totient is φ = 117028776.

The previous prime is 117028741. The next prime is 117028781. The reversal of 117028777 is 777820711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 104468841 + 12559936 = 10221^2 + 3544^2 .

It is an emirp because it is prime and its reverse (777820711) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 117028777 - 2⁷ = 117028649 is a prime.

It is a super-2 number, since 2×117028777² = 27391469292231458, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (117028787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58514388 + 58514389.

It is an arithmetic number, because the mean of its divisors is an integer number (58514389).

Almost surely, 2^117028777 is an apocalyptic number.

It is an amenable number.

117028777 is a deficient number, since it is larger than the sum of its proper divisors (1).

117028777 is an equidigital number, since it uses as much as digits as its factorization.

117028777 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38416, while the sum is 40.

The square root of 117028777 is about 10817.9839619034. The cubic root of 117028777 is about 489.1374203772.

The spelling of 117028777 in words is "one hundred seventeen million, twenty-eight thousand, seven hundred seventy-seven".