4002436 has 6 divisors (see below), whose sum is σ = 7004270. Its totient is φ = 2001216.

The previous prime is 4002431. The next prime is 4002457. The reversal of 4002436 is 6342004.

It can be written as a sum of positive squares in only one way, i.e., 3572100 + 430336 = 1890^2 + 656^2 .

It is not an unprimeable number, because it can be changed into a prime (4002431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500301 + ... + 500308.

Almost surely, 2^4002436 is an apocalyptic number.

It is an amenable number.

4002436 is a deficient number, since it is larger than the sum of its proper divisors (3001834).

4002436 is a wasteful number, since it uses less digits than its factorization.

4002436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1000613 (or 1000611 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 4002436 is about 2000.6089073080. The cubic root of 4002436 is about 158.7723228989.

The spelling of 4002436 in words is "four million, two thousand, four hundred thirty-six".