97989001 has 4 divisors (see below), whose sum is σ = 106897104. Its totient is φ = 89080900.

The previous prime is 97988971. The next prime is 97989049. The reversal of 97989001 is 10098979.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10098979 = 11 ⋅918089.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97989001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97989091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4454035 + ... + 4454056.

It is an arithmetic number, because the mean of its divisors is an integer number (26724276).

Almost surely, 2^97989001 is an apocalyptic number.

It is an amenable number.

97989001 is a deficient number, since it is larger than the sum of its proper divisors (8908103).

97989001 is a wasteful number, since it uses less digits than its factorization.

97989001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8908102.

The product of its (nonzero) digits is 40824, while the sum is 43.

The square root of 97989001 is about 9898.9393876314. The cubic root of 97989001 is about 461.0263801970.

The spelling of 97989001 in words is "ninety-seven million, nine hundred eighty-nine thousand, one".