98012891 has 2 divisors, whose sum is σ = 98012892. Its totient is φ = 98012890.

The previous prime is 98012881. The next prime is 98012911. The reversal of 98012891 is 19821089.

It is a weak prime.

It is an emirp because it is prime and its reverse (19821089) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 98012891 - 2¹⁰ = 98011867 is a prime.

It is not a weakly prime, because it can be changed into another prime (98012881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49006445 + 49006446.

It is an arithmetic number, because the mean of its divisors is an integer number (49006446).

Almost surely, 2^98012891 is an apocalyptic number.

98012891 is a deficient number, since it is larger than the sum of its proper divisors (1).

98012891 is an equidigital number, since it uses as much as digits as its factorization.

98012891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 38.

The square root of 98012891 is about 9900.1460090243. The cubic root of 98012891 is about 461.0638436713.

The spelling of 98012891 in words is "ninety-eight million, twelve thousand, eight hundred ninety-one".