97209740 has 48 divisors (see below), whose sum is σ = 223624800. Its totient is φ = 35331072.

The previous prime is 97209733. The next prime is 97209779. The reversal of 97209740 is 4790279.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 97209694 and 97209703.

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, 4931 + ... + 14789.

It is an arithmetic number, because the mean of its divisors is an integer number (4658850).

Almost surely, 2^97209740 is an apocalyptic number.

It is a pronic number, being equal to 9859×9860.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 97209740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111812400).

97209740 is an abundant number, since it is smaller than the sum of its proper divisors (126415060).

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

97209740 is a wasteful number, since it uses less digits than its factorization.

97209740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9914 (or 9912 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 38.

The square root of 97209740 is about 9859.4999873219. The cubic root of 97209740 is about 459.8010166472.

The spelling of 97209740 in words is "ninety-seven million, two hundred nine thousand, seven hundred forty".