985438453 has 4 divisors (see below), whose sum is σ = 986016780. Its totient is φ = 984860128.

The previous prime is 985438451. The next prime is 985438459. The reversal of 985438453 is 354834589.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 354834589 = 509 ⋅697121.

It can be written as a sum of positive squares in 2 ways, for example, as 412171204 + 573267249 = 20302^2 + 23943^2 .

It is a cyclic number.

It is not a de Polignac number, because 985438453 - 2¹ = 985438451 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 985438397 and 985438406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (985438451) 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, 286600 + ... + 290017.

It is an arithmetic number, because the mean of its divisors is an integer number (246504195).

Almost surely, 2^985438453 is an apocalyptic number.

It is an amenable number.

985438453 is a deficient number, since it is larger than the sum of its proper divisors (578327).

985438453 is a wasteful number, since it uses less digits than its factorization.

985438453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578326.

The product of its digits is 2073600, while the sum is 49.

The square root of 985438453 is about 31391.6940129073. The cubic root of 985438453 is about 995.1223986864.

The spelling of 985438453 in words is "nine hundred eighty-five million, four hundred thirty-eight thousand, four hundred fifty-three".