939896869 has 2 divisors, whose sum is σ = 939896870. Its totient is φ = 939896868.

The previous prime is 939896831. The next prime is 939896887. The reversal of 939896869 is 968698939.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 927994369 + 11902500 = 30463^2 + 3450^2 .

It is a cyclic number.

It is not a de Polignac number, because 939896869 - 2²³ = 931508261 is a prime.

It is a super-2 number, since 2×939896869² = 1766812248712006322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (939890869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 469948434 + 469948435.

It is an arithmetic number, because the mean of its divisors is an integer number (469948435).

Almost surely, 2^939896869 is an apocalyptic number.

It is an amenable number.

939896869 is a deficient number, since it is larger than the sum of its proper divisors (1).

939896869 is an equidigital number, since it uses as much as digits as its factorization.

939896869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45349632, while the sum is 67.

The square root of 939896869 is about 30657.7375062153. The cubic root of 939896869 is about 979.5502826908.

The spelling of 939896869 in words is "nine hundred thirty-nine million, eight hundred ninety-six thousand, eight hundred sixty-nine".