3990215603 has 4 divisors (see below), whose sum is σ = 4352962488. Its totient is φ = 3627468720.

The previous prime is 3990215569. The next prime is 3990215629. The reversal of 3990215603 is 3065120993.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3990215603 - 2²⁰ = 3989167027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3990215683) 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, 181373426 + ... + 181373447.

It is an arithmetic number, because the mean of its divisors is an integer number (1088240622).

Almost surely, 2^3990215603 is an apocalyptic number.

3990215603 is a deficient number, since it is larger than the sum of its proper divisors (362746885).

3990215603 is a wasteful number, since it uses less digits than its factorization.

3990215603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362746884.

The product of its (nonzero) digits is 43740, while the sum is 38.

The square root of 3990215603 is about 63168.1533923543. The cubic root of 3990215603 is about 1586.1056816844.

The spelling of 3990215603 in words is "three billion, nine hundred ninety million, two hundred fifteen thousand, six hundred three".