117280789 has 2 divisors, whose sum is σ = 117280790. Its totient is φ = 117280788.

The previous prime is 117280769. The next prime is 117280811. The reversal of 117280789 is 987082711.

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., 103367889 + 13912900 = 10167^2 + 3730^2 .

It is an emirp because it is prime and its reverse (987082711) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-117280789 is a prime.

It is equal to p_6695539 and since 117280789 and 6695539 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117280769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58640394 + 58640395.

It is an arithmetic number, because the mean of its divisors is an integer number (58640395).

Almost surely, 2^117280789 is an apocalyptic number.

It is an amenable number.

117280789 is a deficient number, since it is larger than the sum of its proper divisors (1).

117280789 is an equidigital number, since it uses as much as digits as its factorization.

117280789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56448, while the sum is 43.

The square root of 117280789 is about 10829.6255244584. The cubic root of 117280789 is about 489.4882746016.

The spelling of 117280789 in words is "one hundred seventeen million, two hundred eighty thousand, seven hundred eighty-nine".