4190440394 has 8 divisors (see below), whose sum is σ = 7183612128. Its totient is φ = 1795903020.

The previous prime is 4190440393. The next prime is 4190440399. The reversal of 4190440394 is 4930440914.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4190440393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 149658572 + ... + 149658599.

It is an arithmetic number, because the mean of its divisors is an integer number (897951516).

Almost surely, 2^4190440394 is an apocalyptic number.

4190440394 is a deficient number, since it is larger than the sum of its proper divisors (2993171734).

4190440394 is a wasteful number, since it uses less digits than its factorization.

4190440394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299317180.

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 4190440394 is about 64733.6110069568. The cubic root of 4190440394 is about 1612.2036095991.

The spelling of 4190440394 in words is "four billion, one hundred ninety million, four hundred forty thousand, three hundred ninety-four".