99892789 has 2 divisors, whose sum is σ = 99892790. Its totient is φ = 99892788.

The previous prime is 99892787. The next prime is 99892801. The reversal of 99892789 is 98729899.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99161764 + 731025 = 9958^2 + 855^2 .

It is a cyclic number.

It is not a de Polignac number, because 99892789 - 2¹ = 99892787 is a prime.

Together with 99892787, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99892781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49946394 + 49946395.

It is an arithmetic number, because the mean of its divisors is an integer number (49946395).

Almost surely, 2^99892789 is an apocalyptic number.

It is an amenable number.

99892789 is a deficient number, since it is larger than the sum of its proper divisors (1).

99892789 is an equidigital number, since it uses as much as digits as its factorization.

99892789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5878656, while the sum is 61.

The square root of 99892789 is about 9994.6380124545. The cubic root of 99892789 is about 463.9929475865.

The spelling of 99892789 in words is "ninety-nine million, eight hundred ninety-two thousand, seven hundred eighty-nine".