117889469 has 2 divisors, whose sum is σ = 117889470. Its totient is φ = 117889468.

The previous prime is 117889427. The next prime is 117889483. The reversal of 117889469 is 964988711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117440569 + 448900 = 10837^2 + 670^2 .

It is a cyclic number.

It is not a de Polignac number, because 117889469 - 2¹⁶ = 117823933 is a prime.

It is a super-2 number, since 2×117889469² = 27795853802203922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 117889469.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117889769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58944734 + 58944735.

It is an arithmetic number, because the mean of its divisors is an integer number (58944735).

Almost surely, 2^117889469 is an apocalyptic number.

It is an amenable number.

117889469 is a deficient number, since it is larger than the sum of its proper divisors (1).

117889469 is an equidigital number, since it uses as much as digits as its factorization.

117889469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 870912, while the sum is 53.

The square root of 117889469 is about 10857.6916975939. The cubic root of 117889469 is about 490.3336184229. Note that the first 3 decimals are identical.

The spelling of 117889469 in words is "one hundred seventeen million, eight hundred eighty-nine thousand, four hundred sixty-nine".