4209090469 has 4 divisors (see below), whose sum is σ = 4456684044. Its totient is φ = 3961496896.

The previous prime is 4209090461. The next prime is 4209090491. The reversal of 4209090469 is 9640909024.

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 1750418244 + 2458672225 = 41838^2 + 49585^2 .

It is a cyclic number.

It is not a de Polignac number, because 4209090469 - 2³ = 4209090461 is a prime.

It is a super-2 number, since 2×4209090469² = 35432885152453279922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4209090461) 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, 123796762 + ... + 123796795.

It is an arithmetic number, because the mean of its divisors is an integer number (1114171011).

Almost surely, 2^4209090469 is an apocalyptic number.

It is an amenable number.

4209090469 is a deficient number, since it is larger than the sum of its proper divisors (247593575).

4209090469 is a wasteful number, since it uses less digits than its factorization.

4209090469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247593574.

The product of its (nonzero) digits is 139968, while the sum is 43.

The square root of 4209090469 is about 64877.5035663365. The cubic root of 4209090469 is about 1614.5918408011.

The spelling of 4209090469 in words is "four billion, two hundred nine million, ninety thousand, four hundred sixty-nine".