97989136 has 60 divisors (see below), whose sum is σ = 221350912. Its totient is φ = 41162688.

The previous prime is 97989121. The next prime is 97989149. The reversal of 97989136 is 63198979.

It is a super-4 number, since 4×97989136⁴ (a number of 33 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 771505 + ... + 771631.

Almost surely, 2^97989136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 97989136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110675456).

97989136 is an abundant number, since it is smaller than the sum of its proper divisors (123361776).

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

97989136 is a wasteful number, since it uses less digits than its factorization.

97989136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308 (or 219 counting only the distinct ones).

The product of its digits is 734832, while the sum is 52.

The square root of 97989136 is about 9898.9462065414. The cubic root of 97989136 is about 461.0265919164.

The spelling of 97989136 in words is "ninety-seven million, nine hundred eighty-nine thousand, one hundred thirty-six".