4191394 has 4 divisors (see below), whose sum is σ = 6287094. Its totient is φ = 2095696.

The previous prime is 4191391. The next prime is 4191403. The reversal of 4191394 is 4931914.

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., 4149369 + 42025 = 2037^2 + 205^2 .

It is not an unprimeable number, because it can be changed into a prime (4191391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1047847 + ... + 1047850.

Almost surely, 2^4191394 is an apocalyptic number.

4191394 is a deficient number, since it is larger than the sum of its proper divisors (2095700).

4191394 is a wasteful number, since it uses less digits than its factorization.

4191394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2095699.

The product of its digits is 3888, while the sum is 31.

The square root of 4191394 is about 2047.2894275114. The cubic root of 4191394 is about 161.2325895110.

The spelling of 4191394 in words is "four million, one hundred ninety-one thousand, three hundred ninety-four".