442013653 has 4 divisors (see below), whose sum is σ = 442559488. Its totient is φ = 441467820.

The previous prime is 442013633. The next prime is 442013657. The reversal of 442013653 is 356310244.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-442013653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442013657) 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, 271701 + ... + 273322.

It is an arithmetic number, because the mean of its divisors is an integer number (110639872).

Almost surely, 2^442013653 is an apocalyptic number.

It is an amenable number.

442013653 is a deficient number, since it is larger than the sum of its proper divisors (545835).

442013653 is an equidigital number, since it uses as much as digits as its factorization.

442013653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545834.

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 442013653 is about 21024.1207426137. The cubic root of 442013653 is about 761.7490034051.

Adding to 442013653 its reverse (356310244), we get a palindrome (798323897).

The spelling of 442013653 in words is "four hundred forty-two million, thirteen thousand, six hundred fifty-three".