212582389 has 2 divisors, whose sum is σ = 212582390. Its totient is φ = 212582388.

The previous prime is 212582371. The next prime is 212582429. The reversal of 212582389 is 983285212.

It is an a-pointer prime, because the next prime (212582429) can be obtained adding 212582389 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 155201764 + 57380625 = 12458^2 + 7575^2 .

It is a cyclic number.

It is not a de Polignac number, because 212582389 - 2²⁵ = 179027957 is a prime.

It is a super-2 number, since 2×212582389² = 90382544225894642, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212582309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106291194 + 106291195.

It is an arithmetic number, because the mean of its divisors is an integer number (106291195).

Almost surely, 2^212582389 is an apocalyptic number.

It is an amenable number.

212582389 is a deficient number, since it is larger than the sum of its proper divisors (1).

212582389 is an equidigital number, since it uses as much as digits as its factorization.

212582389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69120, while the sum is 40.

The square root of 212582389 is about 14580.2053826412. The cubic root of 212582389 is about 596.8187074786.

The spelling of 212582389 in words is "two hundred twelve million, five hundred eighty-two thousand, three hundred eighty-nine".