4891045 has 4 divisors (see below), whose sum is σ = 5869260. Its totient is φ = 3912832.

The previous prime is 4891043. The next prime is 4891057. The reversal of 4891045 is 5401984.

It is a happy number.

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 1181569 + 3709476 = 1087^2 + 1926^2 .

It is a cyclic number.

It is not a de Polignac number, because 4891045 - 2¹ = 4891043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4890998 and 4891016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4891043) 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, 489100 + ... + 489109.

It is an arithmetic number, because the mean of its divisors is an integer number (1467315).

Almost surely, 2^4891045 is an apocalyptic number.

It is an amenable number.

4891045 is a deficient number, since it is larger than the sum of its proper divisors (978215).

4891045 is an equidigital number, since it uses as much as digits as its factorization.

4891045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 978214.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 4891045 is about 2211.5707087950. The cubic root of 4891045 is about 169.7463923266.

The spelling of 4891045 in words is "four million, eight hundred ninety-one thousand, forty-five".