4390513 has 4 divisors (see below), whose sum is σ = 4541940. Its totient is φ = 4239088.

The previous prime is 4390489. The next prime is 4390523. The reversal of 4390513 is 3150934.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3150934 = 2 ⋅1575467.

It can be written as a sum of positive squares in 2 ways, for example, as 3356224 + 1034289 = 1832^2 + 1017^2 .

It is a cyclic number.

It is not a de Polignac number, because 4390513 - 2⁵ = 4390481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4390523) 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, 75670 + ... + 75727.

It is an arithmetic number, because the mean of its divisors is an integer number (1135485).

Almost surely, 2^4390513 is an apocalyptic number.

It is an amenable number.

4390513 is a deficient number, since it is larger than the sum of its proper divisors (151427).

4390513 is a wasteful number, since it uses less digits than its factorization.

4390513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151426.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 4390513 is about 2095.3551011702. The cubic root of 4390513 is about 163.7463981493.

The spelling of 4390513 in words is "four million, three hundred ninety thousand, five hundred thirteen".