97820423 has 2 divisors, whose sum is σ = 97820424. Its totient is φ = 97820422.

The previous prime is 97820413. The next prime is 97820453. The reversal of 97820423 is 32402879.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 97820423 - 2¹⁶ = 97754887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97820413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48910211 + 48910212.

It is an arithmetic number, because the mean of its divisors is an integer number (48910212).

Almost surely, 2^97820423 is an apocalyptic number.

97820423 is a deficient number, since it is larger than the sum of its proper divisors (1).

97820423 is an equidigital number, since it uses as much as digits as its factorization.

97820423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 97820423 is about 9890.4207696134. The cubic root of 97820423 is about 460.7618487510.

The spelling of 97820423 in words is "ninety-seven million, eight hundred twenty thousand, four hundred twenty-three".