97764440 has 16 divisors (see below), whose sum is σ = 219970080. Its totient is φ = 39105760.

The previous prime is 97764439. The next prime is 97764461. The reversal of 97764440 is 4446779.

It is a happy number.

It is a nialpdrome in base 10.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1222016 + ... + 1222095.

It is an arithmetic number, because the mean of its divisors is an integer number (13748130).

Almost surely, 2^97764440 is an apocalyptic number.

It is an amenable number.

97764440 is an abundant number, since it is smaller than the sum of its proper divisors (122205640).

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

97764440 is a wasteful number, since it uses less digits than its factorization.

97764440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2444122 (or 2444118 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 41.

The square root of 97764440 is about 9887.5902018642. The cubic root of 97764440 is about 460.6739333915.

The spelling of 97764440 in words is "ninety-seven million, seven hundred sixty-four thousand, four hundred forty".