32121989 has 8 divisors (see below), whose sum is σ = 34599840. Its totient is φ = 29722896.

The previous prime is 32121977. The next prime is 32121997. The reversal of 32121989 is 98912123.

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 32121989 - 2²⁴ = 15344773 is a prime.

It is a super-2 number, since 2×32121989² = 2063644354632242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32121919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18842 + ... + 20475.

It is an arithmetic number, because the mean of its divisors is an integer number (4324980).

Almost surely, 2^32121989 is an apocalyptic number.

It is an amenable number.

32121989 is a deficient number, since it is larger than the sum of its proper divisors (2477851).

32121989 is a wasteful number, since it uses less digits than its factorization.

32121989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39379.

The product of its digits is 7776, while the sum is 35.

The square root of 32121989 is about 5667.6263991198. The cubic root of 32121989 is about 317.8831268891.

The spelling of 32121989 in words is "thirty-two million, one hundred twenty-one thousand, nine hundred eighty-nine".