11958993 has 6 divisors (see below), whose sum is σ = 17274114. Its totient is φ = 7972656.

The previous prime is 11958979. The next prime is 11958997. The reversal of 11958993 is 39985911.

It can be written as a sum of positive squares in only one way, i.e., 11716929 + 242064 = 3423^2 + 492^2 .

It is not a de Polignac number, because 11958993 - 2⁴ = 11958977 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11958997) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 664380 + ... + 664397.

It is an arithmetic number, because the mean of its divisors is an integer number (2879019).

Almost surely, 2^11958993 is an apocalyptic number.

It is an amenable number.

11958993 is a deficient number, since it is larger than the sum of its proper divisors (5315121).

11958993 is a wasteful number, since it uses less digits than its factorization.

11958993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1328783 (or 1328780 counting only the distinct ones).

The product of its digits is 87480, while the sum is 45.

The square root of 11958993 is about 3458.1776993093. The cubic root of 11958993 is about 228.6817659066.

The spelling of 11958993 in words is "eleven million, nine hundred fifty-eight thousand, nine hundred ninety-three".