75326989 has 2 divisors, whose sum is σ = 75326990. Its totient is φ = 75326988.

The previous prime is 75326987. The next prime is 75327029. The reversal of 75326989 is 98962357.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74960964 + 366025 = 8658^2 + 605^2 .

It is a cyclic number.

It is not a de Polignac number, because 75326989 - 2¹ = 75326987 is a prime.

It is a super-2 number, since 2×75326989² = 11348310543612242, which contains 22 as substring.

Together with 75326987, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75326981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37663494 + 37663495.

It is an arithmetic number, because the mean of its divisors is an integer number (37663495).

Almost surely, 2^75326989 is an apocalyptic number.

It is an amenable number.

75326989 is a deficient number, since it is larger than the sum of its proper divisors (1).

75326989 is an equidigital number, since it uses as much as digits as its factorization.

75326989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 816480, while the sum is 49.

The square root of 75326989 is about 8679.1122241851. The cubic root of 75326989 is about 422.3283179082.

The spelling of 75326989 in words is "seventy-five million, three hundred twenty-six thousand, nine hundred eighty-nine".