98407993 has 2 divisors, whose sum is σ = 98407994. Its totient is φ = 98407992.

The previous prime is 98407987. The next prime is 98407997. The reversal of 98407993 is 39970489.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57805609 + 40602384 = 7603^2 + 6372^2 .

It is a cyclic number.

It is not a de Polignac number, because 98407993 - 2⁹ = 98407481 is a prime.

It is not a weakly prime, because it can be changed into another prime (98407997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49203996 + 49203997.

It is an arithmetic number, because the mean of its divisors is an integer number (49203997).

Almost surely, 2^98407993 is an apocalyptic number.

It is an amenable number.

98407993 is a deficient number, since it is larger than the sum of its proper divisors (1).

98407993 is an equidigital number, since it uses as much as digits as its factorization.

98407993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 489888, while the sum is 49.

The square root of 98407993 is about 9920.0802920138. The cubic root of 98407993 is about 461.6825480482.

The spelling of 98407993 in words is "ninety-eight million, four hundred seven thousand, nine hundred ninety-three".