97889647 has 2 divisors, whose sum is σ = 97889648. Its totient is φ = 97889646.

The previous prime is 97889639. The next prime is 97889669. The reversal of 97889647 is 74698879.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 97889647 - 2³ = 97889639 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 97889591 and 97889600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97889147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48944823 + 48944824.

It is an arithmetic number, because the mean of its divisors is an integer number (48944824).

Almost surely, 2^97889647 is an apocalyptic number.

97889647 is a deficient number, since it is larger than the sum of its proper divisors (1).

97889647 is an equidigital number, since it uses as much as digits as its factorization.

97889647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6096384, while the sum is 58.

The square root of 97889647 is about 9893.9196984815. The cubic root of 97889647 is about 460.8705113267.

The spelling of 97889647 in words is "ninety-seven million, eight hundred eighty-nine thousand, six hundred forty-seven".