97842771 has 24 divisors (see below), whose sum is σ = 152799920. Its totient is φ = 59973696.

The previous prime is 97842751. The next prime is 97842779. The reversal of 97842771 is 17724879.

It is a happy number.

It is not a de Polignac number, because 97842771 - 2⁶ = 97842707 is a prime.

It is not an unprimeable number, because it can be changed into a prime (97842779) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30900 + ... + 33918.

Almost surely, 2^97842771 is an apocalyptic number.

97842771 is a deficient number, since it is larger than the sum of its proper divisors (54957149).

97842771 is a wasteful number, since it uses less digits than its factorization.

97842771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3315 (or 3312 counting only the distinct ones).

The product of its digits is 197568, while the sum is 45.

The square root of 97842771 is about 9891.5504851363. The cubic root of 97842771 is about 460.7969345454.

It can be divided in two parts, 9 and 7842771, that added together give a triangular number (7842780 = T₃₉₆₀).

The spelling of 97842771 in words is "ninety-seven million, eight hundred forty-two thousand, seven hundred seventy-one".