34388639 has 4 divisors (see below), whose sum is σ = 34400400. Its totient is φ = 34376880.

The previous prime is 34388633. The next prime is 34388647. The reversal of 34388639 is 93688343.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 34388639 - 2⁸ = 34388383 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 34388639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34388633) 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, 2294 + ... + 8604.

It is an arithmetic number, because the mean of its divisors is an integer number (8600100).

Almost surely, 2^34388639 is an apocalyptic number.

34388639 is a deficient number, since it is larger than the sum of its proper divisors (11761).

34388639 is an equidigital number, since it uses as much as digits as its factorization.

34388639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11760.

The product of its digits is 373248, while the sum is 44.

The square root of 34388639 is about 5864.1827222555. The cubic root of 34388639 is about 325.1908590975.

The spelling of 34388639 in words is "thirty-four million, three hundred eighty-eight thousand, six hundred thirty-nine".