32621389 has 2 divisors, whose sum is σ = 32621390. Its totient is φ = 32621388.

The previous prime is 32621387. The next prime is 32621417. The reversal of 32621389 is 98312623.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32296489 + 324900 = 5683^2 + 570^2 .

It is a cyclic number.

It is not a de Polignac number, because 32621389 - 2¹ = 32621387 is a prime.

Together with 32621387, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32621387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16310694 + 16310695.

It is an arithmetic number, because the mean of its divisors is an integer number (16310695).

Almost surely, 2^32621389 is an apocalyptic number.

It is an amenable number.

32621389 is a deficient number, since it is larger than the sum of its proper divisors (1).

32621389 is an equidigital number, since it uses as much as digits as its factorization.

32621389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552, while the sum is 34.

The square root of 32621389 is about 5711.5137222981. The cubic root of 32621389 is about 319.5220371048.

The spelling of 32621389 in words is "thirty-two million, six hundred twenty-one thousand, three hundred eighty-nine".