34788989 has 4 divisors (see below), whose sum is σ = 34858656. Its totient is φ = 34719324.

The previous prime is 34788979. The next prime is 34789003. The reversal of 34788989 is 98988743.

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: 98988743 = 7 ⋅14141249.

It is a cyclic number.

It is not a de Polignac number, because 34788989 - 2⁴ = 34788973 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 (34788959) 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, 34079 + ... + 35084.

It is an arithmetic number, because the mean of its divisors is an integer number (8714664).

Almost surely, 2^34788989 is an apocalyptic number.

It is an amenable number.

34788989 is a deficient number, since it is larger than the sum of its proper divisors (69667).

34788989 is an equidigital number, since it uses as much as digits as its factorization.

34788989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69666.

The product of its digits is 3483648, while the sum is 56.

The square root of 34788989 is about 5898.2191380111. The cubic root of 34788989 is about 326.4479426896.

The spelling of 34788989 in words is "thirty-four million, seven hundred eighty-eight thousand, nine hundred eighty-nine".