97019477 has 2 divisors, whose sum is σ = 97019478. Its totient is φ = 97019476.

The previous prime is 97019389. The next prime is 97019479. The reversal of 97019477 is 77491079.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75359761 + 21659716 = 8681^2 + 4654^2 .

It is a cyclic number.

It is not a de Polignac number, because 97019477 - 2¹² = 97015381 is a prime.

Together with 97019479, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97019479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48509738 + 48509739.

It is an arithmetic number, because the mean of its divisors is an integer number (48509739).

Almost surely, 2^97019477 is an apocalyptic number.

It is an amenable number.

97019477 is a deficient number, since it is larger than the sum of its proper divisors (1).

97019477 is an equidigital number, since it uses as much as digits as its factorization.

97019477 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 111132, while the sum is 44.

The square root of 97019477 is about 9849.8465470280. The cubic root of 97019477 is about 459.5008400799.

The spelling of 97019477 in words is "ninety-seven million, nineteen thousand, four hundred seventy-seven".