32421289 has 2 divisors, whose sum is σ = 32421290. Its totient is φ = 32421288.

The previous prime is 32421281. The next prime is 32421307. The reversal of 32421289 is 98212423.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20115225 + 12306064 = 4485^2 + 3508^2 .

It is a cyclic number.

It is not a de Polignac number, because 32421289 - 2³ = 32421281 is a prime.

It is a super-2 number, since 2×32421289² = 2102279960843042, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 32421289.

It is not a weakly prime, because it can be changed into another prime (32421281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16210644 + 16210645.

It is an arithmetic number, because the mean of its divisors is an integer number (16210645).

Almost surely, 2^32421289 is an apocalyptic number.

It is an amenable number.

32421289 is a deficient number, since it is larger than the sum of its proper divisors (1).

32421289 is an equidigital number, since it uses as much as digits as its factorization.

32421289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 31.

The square root of 32421289 is about 5693.9695292476. The cubic root of 32421289 is about 318.8673793509.

The spelling of 32421289 in words is "thirty-two million, four hundred twenty-one thousand, two hundred eighty-nine".