98072291 has 2 divisors, whose sum is σ = 98072292. Its totient is φ = 98072290.

The previous prime is 98072257. The next prime is 98072329. The reversal of 98072291 is 19227089.

It is an a-pointer prime, because the next prime (98072329) can be obtained adding 98072291 to its sum of digits (38).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 98072291 - 2¹⁸ = 97810147 is a prime.

It is not a weakly prime, because it can be changed into another prime (98072231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49036145 + 49036146.

It is an arithmetic number, because the mean of its divisors is an integer number (49036146).

Almost surely, 2^98072291 is an apocalyptic number.

98072291 is a deficient number, since it is larger than the sum of its proper divisors (1).

98072291 is an equidigital number, since it uses as much as digits as its factorization.

98072291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 98072291 is about 9903.1455103921. The cubic root of 98072291 is about 461.1569663252.

The spelling of 98072291 in words is "ninety-eight million, seventy-two thousand, two hundred ninety-one".