4981897 has 4 divisors (see below), whose sum is σ = 4986436. Its totient is φ = 4977360.

The previous prime is 4981877. The next prime is 4981903. The reversal of 4981897 is 7981894.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 35721 + 4946176 = 189^2 + 2224^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4981897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4981807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 523 + ... + 3199.

It is an arithmetic number, because the mean of its divisors is an integer number (1246609).

Almost surely, 2^4981897 is an apocalyptic number.

It is an amenable number.

4981897 is a deficient number, since it is larger than the sum of its proper divisors (4539).

4981897 is a wasteful number, since it uses less digits than its factorization.

4981897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4538.

The product of its digits is 145152, while the sum is 46.

The square root of 4981897 is about 2232.0163529867. The cubic root of 4981897 is about 170.7909738058.

The spelling of 4981897 in words is "four million, nine hundred eighty-one thousand, eight hundred ninety-seven".