4020269 has 4 divisors (see below), whose sum is σ = 4385760. Its totient is φ = 3654780.

The previous prime is 4020257. The next prime is 4020277. The reversal of 4020269 is 9620204.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4020269 - 2²⁰ = 2971693 is a prime.

It is a super-2 number, since 2×4020269² = 32325125664722, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4020869) 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, 182729 + ... + 182750.

It is an arithmetic number, because the mean of its divisors is an integer number (1096440).

Almost surely, 2^4020269 is an apocalyptic number.

It is an amenable number.

4020269 is a deficient number, since it is larger than the sum of its proper divisors (365491).

4020269 is a wasteful number, since it uses less digits than its factorization.

4020269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365490.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 4020269 is about 2005.0608469570. The cubic root of 4020269 is about 159.0077788476.

The spelling of 4020269 in words is "four million, twenty thousand, two hundred sixty-nine".