32990389 has 2 divisors, whose sum is σ = 32990390. Its totient is φ = 32990388.

The previous prime is 32990357. The next prime is 32990393. The reversal of 32990389 is 98309923.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20775364 + 12215025 = 4558^2 + 3495^2 .

It is a cyclic number.

It is not a de Polignac number, because 32990389 - 2⁵ = 32990357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32990189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16495194 + 16495195.

It is an arithmetic number, because the mean of its divisors is an integer number (16495195).

Almost surely, 2^32990389 is an apocalyptic number.

It is an amenable number.

32990389 is a deficient number, since it is larger than the sum of its proper divisors (1).

32990389 is an equidigital number, since it uses as much as digits as its factorization.

32990389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 104976, while the sum is 43.

The square root of 32990389 is about 5743.7260554452. The cubic root of 32990389 is about 320.7222909736.

The spelling of 32990389 in words is "thirty-two million, nine hundred ninety thousand, three hundred eighty-nine".