64034989 has 4 divisors (see below), whose sum is σ = 65596860. Its totient is φ = 62473120.

The previous prime is 64034969. The next prime is 64035007. The reversal of 64034989 is 98943046.

64034989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98943046 = 2 ⋅49471523.

It can be written as a sum of positive squares in 2 ways, for example, as 1102500 + 62932489 = 1050^2 + 7933^2 .

It is a cyclic number.

It is not a de Polignac number, because 64034989 - 2¹⁵ = 64002221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64034969) 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, 780874 + ... + 780955.

It is an arithmetic number, because the mean of its divisors is an integer number (16399215).

Almost surely, 2^64034989 is an apocalyptic number.

It is an amenable number.

64034989 is a deficient number, since it is larger than the sum of its proper divisors (1561871).

64034989 is a wasteful number, since it uses less digits than its factorization.

64034989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1561870.

The product of its (nonzero) digits is 186624, while the sum is 43.

The square root of 64034989 is about 8002.1865136974. The cubic root of 64034989 is about 400.0728804703.

The spelling of 64034989 in words is "sixty-four million, thirty-four thousand, nine hundred eighty-nine".