2129393 has 6 divisors (see below), whose sum is σ = 2477106. Its totient is φ = 1825152.

The previous prime is 2129389. The next prime is 2129399. The reversal of 2129393 is 3939212.

It can be written as a sum of positive squares in only one way, i.e., 1882384 + 247009 = 1372^2 + 497^2 .

It is not a de Polignac number, because 2129393 - 2² = 2129389 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2129399) 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, 21680 + ... + 21777.

It is an arithmetic number, because the mean of its divisors is an integer number (412851).

2^2129393 is an apocalyptic number.

It is an amenable number.

2129393 is a deficient number, since it is larger than the sum of its proper divisors (347713).

2129393 is an equidigital number, since it uses as much as digits as its factorization.

2129393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43471 (or 43464 counting only the distinct ones).

The product of its digits is 2916, while the sum is 29.

The square root of 2129393 is about 1459.2439823415. The cubic root of 2129393 is about 128.6526118086.

The spelling of 2129393 in words is "two million, one hundred twenty-nine thousand, three hundred ninety-three".