4111945 has 4 divisors (see below), whose sum is σ = 4934340. Its totient is φ = 3289552.

The previous prime is 4111901. The next prime is 4111951. The reversal of 4111945 is 5491114.

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 3069504 + 1042441 = 1752^2 + 1021^2 .

It is a cyclic number.

It is not a de Polignac number, because 4111945 - 2⁷ = 4111817 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 411190 + ... + 411199.

It is an arithmetic number, because the mean of its divisors is an integer number (1233585).

Almost surely, 2^4111945 is an apocalyptic number.

It is an amenable number.

4111945 is a deficient number, since it is larger than the sum of its proper divisors (822395).

4111945 is an equidigital number, since it uses as much as digits as its factorization.

4111945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 822394.

The product of its digits is 720, while the sum is 25.

The square root of 4111945 is about 2027.7931354061. The cubic root of 4111945 is about 160.2073483630.

The spelling of 4111945 in words is "four million, one hundred eleven thousand, nine hundred forty-five".