8638469 has 4 divisors (see below), whose sum is σ = 9872544. Its totient is φ = 7404396.

The previous prime is 8638463. The next prime is 8638471. The reversal of 8638469 is 9648368.

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 8638469 - 2⁴ = 8638453 is a prime.

It is a super-2 number, since 2×8638469² = 149246293327922, 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 (8638463) 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, 617027 + ... + 617040.

It is an arithmetic number, because the mean of its divisors is an integer number (2468136).

Almost surely, 2^8638469 is an apocalyptic number.

It is an amenable number.

8638469 is a deficient number, since it is larger than the sum of its proper divisors (1234075).

8638469 is a wasteful number, since it uses less digits than its factorization.

8638469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1234074.

The product of its digits is 248832, while the sum is 44.

The square root of 8638469 is about 2939.1272514132. The cubic root of 8638469 is about 205.1849926391.

The spelling of 8638469 in words is "eight million, six hundred thirty-eight thousand, four hundred sixty-nine".