4020169 has 4 divisors (see below), whose sum is σ = 4047300. Its totient is φ = 3993040.

The previous prime is 4020167. The next prime is 4020197. The reversal of 4020169 is 9610204.

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 455625 + 3564544 = 675^2 + 1888^2 .

It is a cyclic number.

It is not a de Polignac number, because 4020169 - 2¹ = 4020167 is a prime.

It is a super-2 number, since 2×4020169² = 32323517577122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4020167) 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, 13342 + ... + 13639.

It is an arithmetic number, because the mean of its divisors is an integer number (1011825).

Almost surely, 2^4020169 is an apocalyptic number.

It is an amenable number.

4020169 is a deficient number, since it is larger than the sum of its proper divisors (27131).

4020169 is a wasteful number, since it uses less digits than its factorization.

4020169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27130.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 4020169 is about 2005.0359099029. The cubic root of 4020169 is about 159.0064604524.

The spelling of 4020169 in words is "four million, twenty thousand, one hundred sixty-nine".