3996545 has 16 divisors (see below), whose sum is σ = 5546880. Its totient is φ = 2707584.

The previous prime is 3996541. The next prime is 3996569. The reversal of 3996545 is 5456993.

It is a cyclic number.

It is not a de Polignac number, because 3996545 - 2² = 3996541 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3996541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2474 + ... + 3756.

It is an arithmetic number, because the mean of its divisors is an integer number (346680).

Almost surely, 2^3996545 is an apocalyptic number.

3996545 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3996545 is a deficient number, since it is larger than the sum of its proper divisors (1550335).

3996545 is a wasteful number, since it uses less digits than its factorization.

3996545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1384.

The product of its digits is 145800, while the sum is 41.

The square root of 3996545 is about 1999.1360634034. The cubic root of 3996545 is about 158.6943881096.

The spelling of 3996545 in words is "three million, nine hundred ninety-six thousand, five hundred forty-five".