97898477 has 2 divisors, whose sum is σ = 97898478. Its totient is φ = 97898476.

The previous prime is 97898467. The next prime is 97898483. The reversal of 97898477 is 77489879.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59197636 + 38700841 = 7694^2 + 6221^2 .

It is a cyclic number.

It is not a de Polignac number, because 97898477 - 2¹⁶ = 97832941 is a prime.

It is a super-2 number, since 2×97898477² = 19168223597839058, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97898407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48949238 + 48949239.

It is an arithmetic number, because the mean of its divisors is an integer number (48949239).

Almost surely, 2^97898477 is an apocalyptic number.

It is an amenable number.

97898477 is a deficient number, since it is larger than the sum of its proper divisors (1).

97898477 is an equidigital number, since it uses as much as digits as its factorization.

97898477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7112448, while the sum is 59.

The square root of 97898477 is about 9894.3659220791. The cubic root of 97898477 is about 460.8843683054.

The spelling of 97898477 in words is "ninety-seven million, eight hundred ninety-eight thousand, four hundred seventy-seven".