889433409 has 4 divisors (see below), whose sum is σ = 1185911216. Its totient is φ = 592955604.

The previous prime is 889433399. The next prime is 889433423. The reversal of 889433409 is 904334988.

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 not a de Polignac number, because 889433409 - 2¹² = 889429313 is a prime.

It is a super-2 number, since 2×889433409² = 1582183578090722562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (889433609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 148238899 + ... + 148238904.

It is an arithmetic number, because the mean of its divisors is an integer number (296477804).

Almost surely, 2^889433409 is an apocalyptic number.

It is an amenable number.

889433409 is a deficient number, since it is larger than the sum of its proper divisors (296477807).

889433409 is a wasteful number, since it uses less digits than its factorization.

889433409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296477806.

The product of its (nonzero) digits is 746496, while the sum is 48.

The square root of 889433409 is about 29823.3701817886. The cubic root of 889433409 is about 961.6960069357.

The spelling of 889433409 in words is "eight hundred eighty-nine million, four hundred thirty-three thousand, four hundred nine".