97784442 has 64 divisors (see below), whose sum is σ = 262967040. Its totient is φ = 26293248.

The previous prime is 97784441. The next prime is 97784443. The reversal of 97784442 is 24448779.

It is an interprime number because it is at equal distance from previous prime (97784441) and next prime (97784443).

It is not an unprimeable number, because it can be changed into a prime (97784441) 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 in 31 ways as a sum of consecutive naturals, for example, 1183 + ... + 14034.

It is an arithmetic number, because the mean of its divisors is an integer number (4108860).

Almost surely, 2^97784442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 97784442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (131483520).

97784442 is an abundant number, since it is smaller than the sum of its proper divisors (165182598).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

97784442 is a wasteful number, since it uses less digits than its factorization.

97784442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15252 (or 15246 counting only the distinct ones).

The product of its digits is 451584, while the sum is 45.

The square root of 97784442 is about 9888.6016200472. The cubic root of 97784442 is about 460.7053482621.

The spelling of 97784442 in words is "ninety-seven million, seven hundred eighty-four thousand, four hundred forty-two".