83270989 has 2 divisors, whose sum is σ = 83270990. Its totient is φ = 83270988.

The previous prime is 83270969. The next prime is 83271029. The reversal of 83270989 is 98907238.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53655625 + 29615364 = 7325^2 + 5442^2 .

It is a cyclic number.

It is not a de Polignac number, because 83270989 - 2⁹ = 83270477 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83270969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41635494 + 41635495.

It is an arithmetic number, because the mean of its divisors is an integer number (41635495).

Almost surely, 2^83270989 is an apocalyptic number.

It is an amenable number.

83270989 is a deficient number, since it is larger than the sum of its proper divisors (1).

83270989 is an equidigital number, since it uses as much as digits as its factorization.

83270989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 46.

The square root of 83270989 is about 9125.2939130748. The cubic root of 83270989 is about 436.6812796099.

The spelling of 83270989 in words is "eighty-three million, two hundred seventy thousand, nine hundred eighty-nine".