34187989 has 8 divisors (see below), whose sum is σ = 37363680. Its totient is φ = 31023600.

The previous prime is 34187983. The next prime is 34188029. The reversal of 34187989 is 98978143.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 34187989 - 2³ = 34187981 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 (34187981) 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, 4299 + ... + 9319.

It is an arithmetic number, because the mean of its divisors is an integer number (4670460).

Almost surely, 2^34187989 is an apocalyptic number.

It is an amenable number.

34187989 is a deficient number, since it is larger than the sum of its proper divisors (3175691).

34187989 is a wasteful number, since it uses less digits than its factorization.

34187989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5651.

The product of its digits is 435456, while the sum is 49.

The square root of 34187989 is about 5847.0495978741. The cubic root of 34187989 is about 324.5571530612.

The spelling of 34187989 in words is "thirty-four million, one hundred eighty-seven thousand, nine hundred eighty-nine".