89772029 has 2 divisors, whose sum is σ = 89772030. Its totient is φ = 89772028.

The previous prime is 89771993. The next prime is 89772031. The reversal of 89772029 is 92027798.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87516025 + 2256004 = 9355^2 + 1502^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89772029 is a prime.

Together with 89772031, 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 (89772229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44886014 + 44886015.

It is an arithmetic number, because the mean of its divisors is an integer number (44886015).

Almost surely, 2^89772029 is an apocalyptic number.

It is an amenable number.

89772029 is a deficient number, since it is larger than the sum of its proper divisors (1).

89772029 is an equidigital number, since it uses as much as digits as its factorization.

89772029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 127008, while the sum is 44.

The square root of 89772029 is about 9474.8102355667. The cubic root of 89772029 is about 447.7617731232.

The spelling of 89772029 in words is "eighty-nine million, seven hundred seventy-two thousand, twenty-nine".