64089089 has 4 divisors (see below), whose sum is σ = 64473024. Its totient is φ = 63705156.

The previous prime is 64089083. The next prime is 64089097. The reversal of 64089089 is 98098046.

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: 98098046 = 2 ⋅49049023.

It is not a de Polignac number, because 64089089 - 2²⁰ = 63040513 is a prime.

It is a super-2 number, since 2×64089089² = 8214822657699842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64089083) 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, 191717 + ... + 192050.

It is an arithmetic number, because the mean of its divisors is an integer number (16118256).

Almost surely, 2^64089089 is an apocalyptic number.

It is an amenable number.

64089089 is a deficient number, since it is larger than the sum of its proper divisors (383935).

64089089 is a wasteful number, since it uses less digits than its factorization.

64089089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383934.

The product of its (nonzero) digits is 124416, while the sum is 44.

The square root of 64089089 is about 8005.5661261400. The cubic root of 64089089 is about 400.1855160295.

The spelling of 64089089 in words is "sixty-four million, eighty-nine thousand, eighty-nine".