34639393 has 2 divisors, whose sum is σ = 34639394. Its totient is φ = 34639392.

The previous prime is 34639361. The next prime is 34639433. The reversal of 34639393 is 39393643.

It is an a-pointer prime, because the next prime (34639433) can be obtained adding 34639393 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29724304 + 4915089 = 5452^2 + 2217^2 .

It is an emirp because it is prime and its reverse (39393643) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 34639393 - 2⁵ = 34639361 is a prime.

It is not a weakly prime, because it can be changed into another prime (34639343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17319696 + 17319697.

It is an arithmetic number, because the mean of its divisors is an integer number (17319697).

Almost surely, 2^34639393 is an apocalyptic number.

It is an amenable number.

34639393 is a deficient number, since it is larger than the sum of its proper divisors (1).

34639393 is an equidigital number, since it uses as much as digits as its factorization.

34639393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 157464, while the sum is 40.

The square root of 34639393 is about 5885.5240208498. The cubic root of 34639393 is about 325.9793511957.

The spelling of 34639393 in words is "thirty-four million, six hundred thirty-nine thousand, three hundred ninety-three".