936989 has 4 divisors (see below), whose sum is σ = 992124. Its totient is φ = 881856.

The previous prime is 936967. The next prime is 937003. The reversal of 936989 is 989639.

936989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 840889 + 96100 = 917^2 + 310^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-936989 is a prime.

It is a super-2 number, since 2×936989² = 1755896772242, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 936989.

It is not an unprimeable number, because it can be changed into a prime (936919) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27542 + ... + 27575.

It is an arithmetic number, because the mean of its divisors is an integer number (248031).

2⁹³⁶⁹⁸⁹ is an apocalyptic number.

It is an amenable number.

936989 is a deficient number, since it is larger than the sum of its proper divisors (55135).

936989 is a wasteful number, since it uses less digits than its factorization.

936989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55134.

The product of its digits is 104976, while the sum is 44.

The square root of 936989 is about 967.9819213188. The cubic root of 936989 is about 97.8539055986.

Subtracting 936989 from its reverse (989639), we obtain a triangular number (52650 = T₃₂₄).

The spelling of 936989 in words is "nine hundred thirty-six thousand, nine hundred eighty-nine".