34021989 has 12 divisors (see below), whose sum is σ = 51729600. Its totient is φ = 21487464.

The previous prime is 34021979. The next prime is 34022003. The reversal of 34021989 is 98912043.

It is not a de Polignac number, because 34021989 - 2⁷ = 34021861 is a prime.

It is a super-2 number, since 2×34021989² = 2314991471032242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34021909) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 99309 + ... + 99650.

It is an arithmetic number, because the mean of its divisors is an integer number (4310800).

Almost surely, 2^34021989 is an apocalyptic number.

It is an amenable number.

34021989 is a deficient number, since it is larger than the sum of its proper divisors (17707611).

34021989 is a wasteful number, since it uses less digits than its factorization.

34021989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198984 (or 198981 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 34021989 is about 5832.8371312767. The cubic root of 34021989 is about 324.0310041204.

The spelling of 34021989 in words is "thirty-four million, twenty-one thousand, nine hundred eighty-nine".