936091989 has 24 divisors (see below), whose sum is σ = 1574456832. Its totient is φ = 524815200.

The previous prime is 936091987. The next prime is 936091993. The reversal of 936091989 is 989190639.

It is not a de Polignac number, because 936091989 - 2¹ = 936091987 is a prime.

It is a super-2 number, since 2×936091989² = 1752536423739952242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (936091987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 136837 + ... + 143514.

It is an arithmetic number, because the mean of its divisors is an integer number (65602368).

Almost surely, 2^936091989 is an apocalyptic number.

It is an amenable number.

936091989 is a deficient number, since it is larger than the sum of its proper divisors (638364843).

936091989 is a wasteful number, since it uses less digits than its factorization.

936091989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280417 (or 280414 counting only the distinct ones).

The product of its (nonzero) digits is 944784, while the sum is 54.

The square root of 936091989 is about 30595.6204218839. The cubic root of 936091989 is about 978.2266935325.

The spelling of 936091989 in words is "nine hundred thirty-six million, ninety-one thousand, nine hundred eighty-nine".