98409491 has 2 divisors, whose sum is σ = 98409492. Its totient is φ = 98409490.

The previous prime is 98409449. The next prime is 98409497. The reversal of 98409491 is 19490489.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 98409491 - 2¹⁴ = 98393107 is a prime.

It is not a weakly prime, because it can be changed into another prime (98409497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49204745 + 49204746.

It is an arithmetic number, because the mean of its divisors is an integer number (49204746).

Almost surely, 2^98409491 is an apocalyptic number.

98409491 is a deficient number, since it is larger than the sum of its proper divisors (1).

98409491 is an equidigital number, since it uses as much as digits as its factorization.

98409491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 93312, while the sum is 44.

The square root of 98409491 is about 9920.1557951476. The cubic root of 98409491 is about 461.6848906660.

The spelling of 98409491 in words is "ninety-eight million, four hundred nine thousand, four hundred ninety-one".