4045394026 has 4 divisors (see below), whose sum is σ = 6068091042. Its totient is φ = 2022697012.

The previous prime is 4045394009. The next prime is 4045394053. The reversal of 4045394026 is 6204935404.

It is a happy number.

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., 3063511801 + 981882225 = 55349^2 + 31335^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1011348505 + ... + 1011348508.

Almost surely, 2^4045394026 is an apocalyptic number.

4045394026 is a deficient number, since it is larger than the sum of its proper divisors (2022697016).

4045394026 is a wasteful number, since it uses less digits than its factorization.

4045394026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2022697015.

The product of its (nonzero) digits is 103680, while the sum is 37.

The square root of 4045394026 is about 63603.4120625615. The cubic root of 4045394026 is about 1593.3833556984.

The spelling of 4045394026 in words is "four billion, forty-five million, three hundred ninety-four thousand, twenty-six".