445434013 has 4 divisors (see below), whose sum is σ = 445552668. Its totient is φ = 445315360.

The previous prime is 445434007. The next prime is 445434079. The reversal of 445434013 is 310434544.

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 379548324 + 65885689 = 19482^2 + 8117^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-445434013 is a prime.

It is a super-2 number, since 2×445434013² = 396822919874568338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445434413) 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, 53506 + ... + 61267.

It is an arithmetic number, because the mean of its divisors is an integer number (111388167).

Almost surely, 2^445434013 is an apocalyptic number.

It is an amenable number.

445434013 is a deficient number, since it is larger than the sum of its proper divisors (118655).

445434013 is a wasteful number, since it uses less digits than its factorization.

445434013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118654.

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 445434013 is about 21105.3076973542. The cubic root of 445434013 is about 763.7087951391.

Adding to 445434013 its reverse (310434544), we get a palindrome (755868557).

The spelling of 445434013 in words is "four hundred forty-five million, four hundred thirty-four thousand, thirteen".