993937 has 4 divisors (see below), whose sum is σ = 1135936. Its totient is φ = 851940.

The previous prime is 993919. The next prime is 993943. The reversal of 993937 is 739399.

It is a happy number.

993937 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 993937 - 2¹¹ = 991889 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 993937.

It is not an unprimeable number, because it can be changed into a prime (993907) 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, 70989 + ... + 71002.

It is an arithmetic number, because the mean of its divisors is an integer number (283984).

2⁹⁹³⁹³⁷ is an apocalyptic number.

It is an amenable number.

993937 is a deficient number, since it is larger than the sum of its proper divisors (141999).

993937 is a wasteful number, since it uses less digits than its factorization.

993937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141998.

The product of its digits is 45927, while the sum is 40.

The square root of 993937 is about 996.9638910211. The cubic root of 993937 is about 99.7974901745.

The spelling of 993937 in words is "nine hundred ninety-three thousand, nine hundred thirty-seven".