2093986 has 4 divisors (see below), whose sum is σ = 3140982. Its totient is φ = 1046992.

The previous prime is 2093981. The next prime is 2094011. The reversal of 2093986 is 6893902.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6893902 = 2 ⋅3446951.

It can be written as a sum of positive squares in only one way, i.e., 2047761 + 46225 = 1431^2 + 215^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2093981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 523495 + ... + 523498.

2^2093986 is an apocalyptic number.

2093986 is a deficient number, since it is larger than the sum of its proper divisors (1046996).

2093986 is a wasteful number, since it uses less digits than its factorization.

2093986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1046995.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 2093986 is about 1447.0611597303. The cubic root of 2093986 is about 127.9355551241.

It can be divided in two parts, 20939 and 86, that added together give a square (21025 = 145²).

The spelling of 2093986 in words is "two million, ninety-three thousand, nine hundred eighty-six".