97716440 has 16 divisors (see below), whose sum is σ = 219862080. Its totient is φ = 39086560.

The previous prime is 97716439. The next prime is 97716461. The reversal of 97716440 is 4461779.

It is a junction number, because it is equal to n+sod(n) for n = 97716394 and 97716403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1221416 + ... + 1221495.

It is an arithmetic number, because the mean of its divisors is an integer number (13741380).

Almost surely, 2^97716440 is an apocalyptic number.

It is an amenable number.

97716440 is an abundant number, since it is smaller than the sum of its proper divisors (122145640).

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

97716440 is a wasteful number, since it uses less digits than its factorization.

97716440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2442922 (or 2442918 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 97716440 is about 9885.1626187939. The cubic root of 97716440 is about 460.5985277578.

The spelling of 97716440 in words is "ninety-seven million, seven hundred sixteen thousand, four hundred forty".