3599945 has 4 divisors (see below), whose sum is σ = 4319940. Its totient is φ = 2879952.

The previous prime is 3599941. The next prime is 3599963. The reversal of 3599945 is 5499953.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2493241 + 1106704 = 1579^2 + 1052^2 .

It is a cyclic number.

It is not a de Polignac number, because 3599945 - 2² = 3599941 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3599896 and 3599905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3599941) 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 3 ways as a sum of consecutive naturals, for example, 359990 + ... + 359999.

It is an arithmetic number, because the mean of its divisors is an integer number (1079985).

Almost surely, 2^3599945 is an apocalyptic number.

It is an amenable number.

3599945 is a deficient number, since it is larger than the sum of its proper divisors (719995).

3599945 is an equidigital number, since it uses as much as digits as its factorization.

3599945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 719994.

The product of its digits is 218700, while the sum is 44.

The square root of 3599945 is about 1897.3521022731. The cubic root of 3599945 is about 153.2611059744.

The spelling of 3599945 in words is "three million, five hundred ninety-nine thousand, nine hundred forty-five".