2100394 has 4 divisors (see below), whose sum is σ = 3150594. Its totient is φ = 1050196.

The previous prime is 2100377. The next prime is 2100403. The reversal of 2100394 is 4930012.

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., 1863225 + 237169 = 1365^2 + 487^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 525097 + ... + 525100.

2^2100394 is an apocalyptic number.

2100394 is a deficient number, since it is larger than the sum of its proper divisors (1050200).

2100394 is a wasteful number, since it uses less digits than its factorization.

2100394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1050199.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 2100394 is about 1449.2736111584. The cubic root of 2100394 is about 128.0659246994.

The spelling of 2100394 in words is "two million, one hundred thousand, three hundred ninety-four".