4069145 has 4 divisors (see below), whose sum is σ = 4882980. Its totient is φ = 3255312.

The previous prime is 4069139. The next prime is 4069157. The reversal of 4069145 is 5419604.

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 3200521 + 868624 = 1789^2 + 932^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4069145 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, 406910 + ... + 406919.

It is an arithmetic number, because the mean of its divisors is an integer number (1220745).

Almost surely, 2^4069145 is an apocalyptic number.

It is an amenable number.

4069145 is a deficient number, since it is larger than the sum of its proper divisors (813835).

4069145 is an equidigital number, since it uses as much as digits as its factorization.

4069145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 813834.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 4069145 is about 2017.2121851704. The cubic root of 4069145 is about 159.6495585235.

The spelling of 4069145 in words is "four million, sixty-nine thousand, one hundred forty-five".