97443491 has 2 divisors, whose sum is σ = 97443492. Its totient is φ = 97443490.

The previous prime is 97443383. The next prime is 97443503. The reversal of 97443491 is 19434479.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 97443491 - 2¹⁴ = 97427107 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (97443091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48721745 + 48721746.

It is an arithmetic number, because the mean of its divisors is an integer number (48721746).

Almost surely, 2^97443491 is an apocalyptic number.

97443491 is a deficient number, since it is larger than the sum of its proper divisors (1).

97443491 is an equidigital number, since it uses as much as digits as its factorization.

97443491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 41.

The square root of 97443491 is about 9871.3469698922. The cubic root of 97443491 is about 460.1692682038.

The spelling of 97443491 in words is "ninety-seven million, four hundred forty-three thousand, four hundred ninety-one".