2140394 has 4 divisors (see below), whose sum is σ = 3210594. Its totient is φ = 1070196.

The previous prime is 2140393. The next prime is 2140399. The reversal of 2140394 is 4930412.

2140394 is an esthetic number in base 11, because in such base its adjacent digits differ by 1.

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

It can be written as a sum of positive squares in only one way, i.e., 2140369 + 25 = 1463^2 + 5^2 .

It is not an unprimeable number, because it can be changed into a prime (2140393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 535097 + ... + 535100.

2^2140394 is an apocalyptic number.

2140394 is a deficient number, since it is larger than the sum of its proper divisors (1070200).

2140394 is a wasteful number, since it uses less digits than its factorization.

2140394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1070199.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 2140394 is about 1463.0085440625. The cubic root of 2140394 is about 128.8737823599.

The spelling of 2140394 in words is "two million, one hundred forty thousand, three hundred ninety-four".