34639989 has 8 divisors (see below), whose sum is σ = 47676672. Its totient is φ = 22348320.

The previous prime is 34639939. The next prime is 34639991. The reversal of 34639989 is 98993643.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 34639989 - 2¹² = 34635893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34639919) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 186144 + ... + 186329.

It is an arithmetic number, because the mean of its divisors is an integer number (5959584).

Almost surely, 2^34639989 is an apocalyptic number.

It is an amenable number.

34639989 is a deficient number, since it is larger than the sum of its proper divisors (13036683).

34639989 is a wasteful number, since it uses less digits than its factorization.

34639989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372507.

The product of its digits is 1259712, while the sum is 51.

The square root of 34639989 is about 5885.5746533367. The cubic root of 34639989 is about 325.9812207683.

The spelling of 34639989 in words is "thirty-four million, six hundred thirty-nine thousand, nine hundred eighty-nine".