5640469 has 4 divisors (see below), whose sum is σ = 5672160. Its totient is φ = 5608780.

The previous prime is 5640463. The next prime is 5640527. The reversal of 5640469 is 9640465.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9640465 = 5 ⋅1928093.

It is a cyclic number.

It is not a de Polignac number, because 5640469 - 2³ = 5640461 is a prime.

It is a super-2 number, since 2×5640469² = 63629781079922, 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 (5640461) 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, 15577 + ... + 15934.

It is an arithmetic number, because the mean of its divisors is an integer number (1418040).

Almost surely, 2^5640469 is an apocalyptic number.

It is an amenable number.

5640469 is a deficient number, since it is larger than the sum of its proper divisors (31691).

5640469 is a wasteful number, since it uses less digits than its factorization.

5640469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31690.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 5640469 is about 2374.9671576677. The cubic root of 5640469 is about 178.0075429198.

The spelling of 5640469 in words is "five million, six hundred forty thousand, four hundred sixty-nine".