97210440 has 48 divisors (see below), whose sum is σ = 315935100. Its totient is φ = 25922688.

The previous prime is 97210423. The next prime is 97210457. The reversal of 97210440 is 4401279.

It is a happy number.

97210440 is a `hidden beast` number, since 9 + 7 + 210 + 440 = 666.

It is an interprime number because it is at equal distance from previous prime (97210423) and next prime (97210457).

It can be written as a sum of positive squares in 2 ways, for example, as 97180164 + 30276 = 9858^2 + 174^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 134655 + ... + 135374.

Almost surely, 2^97210440 is an apocalyptic number.

97210440 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

97210440 is an abundant number, since it is smaller than the sum of its proper divisors (218724660).

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

97210440 is a wasteful number, since it uses less digits than its factorization.

97210440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270046 (or 270039 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 97210440 is about 9859.5354860156. The cubic root of 97210440 is about 459.8021203087.

The spelling of 97210440 in words is "ninety-seven million, two hundred ten thousand, four hundred forty".