97816440 has 64 divisors (see below), whose sum is σ = 294314400. Its totient is φ = 26007552.

The previous prime is 97816421. The next prime is 97816451. The reversal of 97816440 is 4461879.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48084 + ... + 50076.

Almost surely, 2^97816440 is an apocalyptic number.

It is an amenable number.

97816440 is an abundant number, since it is smaller than the sum of its proper divisors (196497960).

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

97816440 is a wasteful number, since it uses less digits than its factorization.

97816440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2416 (or 2412 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 97816440 is about 9890.2194111152. The cubic root of 97816440 is about 460.7555949808.

The spelling of 97816440 in words is "ninety-seven million, eight hundred sixteen thousand, four hundred forty".