939091 has 2 divisors, whose sum is σ = 939092. Its totient is φ = 939090.

The previous prime is 939089. The next prime is 939109. The reversal of 939091 is 190939.

939091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with next prime (939109) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 939091 - 2¹ = 939089 is a prime.

Together with 939089, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (939011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 469545 + 469546.

It is an arithmetic number, because the mean of its divisors is an integer number (469546).

2⁹³⁹⁰⁹¹ is an apocalyptic number.

939091 is a deficient number, since it is larger than the sum of its proper divisors (1).

939091 is an equidigital number, since it uses as much as digits as its factorization.

939091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2187, while the sum is 31.

The square root of 939091 is about 969.0670771417. The cubic root of 939091 is about 97.9270246675.

The spelling of 939091 in words is "nine hundred thirty-nine thousand, ninety-one".