4036396521 has 4 divisors (see below), whose sum is σ = 5381862032. Its totient is φ = 2690931012.

The previous prime is 4036396501. The next prime is 4036396579. The reversal of 4036396521 is 1256936304.

4036396521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 4036396521 - 2⁶ = 4036396457 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4036396521.

It is not an unprimeable number, because it can be changed into a prime (4036396501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 672732751 + ... + 672732756.

It is an arithmetic number, because the mean of its divisors is an integer number (1345465508).

Almost surely, 2^4036396521 is an apocalyptic number.

It is an amenable number.

4036396521 is a deficient number, since it is larger than the sum of its proper divisors (1345465511).

4036396521 is a wasteful number, since it uses less digits than its factorization.

4036396521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1345465510.

The product of its (nonzero) digits is 116640, while the sum is 39.

The square root of 4036396521 is about 63532.6413822060. The cubic root of 4036396521 is about 1592.2011785916.

The spelling of 4036396521 in words is "four billion, thirty-six million, three hundred ninety-six thousand, five hundred twenty-one".