97819903 has 2 divisors, whose sum is σ = 97819904. Its totient is φ = 97819902.

The previous prime is 97819873. The next prime is 97819907. The reversal of 97819903 is 30991879.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 97819903 - 2¹⁷ = 97688831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97819907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48909951 + 48909952.

It is an arithmetic number, because the mean of its divisors is an integer number (48909952).

Almost surely, 2^97819903 is an apocalyptic number.

97819903 is a deficient number, since it is larger than the sum of its proper divisors (1).

97819903 is an equidigital number, since it uses as much as digits as its factorization.

97819903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 122472, while the sum is 46.

The square root of 97819903 is about 9890.3944815159. The cubic root of 97819903 is about 460.7610323006.

The spelling of 97819903 in words is "ninety-seven million, eight hundred nineteen thousand, nine hundred three".