4036429394 has 4 divisors (see below), whose sum is σ = 6054644094. Its totient is φ = 2018214696.

The previous prime is 4036429381. The next prime is 4036429399. The reversal of 4036429394 is 4939246304.

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., 3217725625 + 818703769 = 56725^2 + 28613^2 .

It is not an unprimeable number, because it can be changed into a prime (4036429399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1009107347 + ... + 1009107350.

Almost surely, 2^4036429394 is an apocalyptic number.

4036429394 is a deficient number, since it is larger than the sum of its proper divisors (2018214700).

4036429394 is a wasteful number, since it uses less digits than its factorization.

4036429394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2018214699.

The product of its (nonzero) digits is 559872, while the sum is 44.

The square root of 4036429394 is about 63532.9000912126. The cubic root of 4036429394 is about 1592.2055009524.

The spelling of 4036429394 in words is "four billion, thirty-six million, four hundred twenty-nine thousand, three hundred ninety-four".