97800091 has 8 divisors (see below), whose sum is σ = 100030464. Its totient is φ = 95576040.

The previous prime is 97800089. The next prime is 97800107. The reversal of 97800091 is 19000879.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 97800091 - 2¹ = 97800089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97800041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44566 + ... + 46708.

It is an arithmetic number, because the mean of its divisors is an integer number (12503808).

Almost surely, 2^97800091 is an apocalyptic number.

97800091 is a deficient number, since it is larger than the sum of its proper divisors (2230373).

97800091 is a wasteful number, since it uses less digits than its factorization.

97800091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3161.

The product of its (nonzero) digits is 4536, while the sum is 34.

The square root of 97800091 is about 9889.3928529511. The cubic root of 97800091 is about 460.7299233829.

The spelling of 97800091 in words is "ninety-seven million, eight hundred thousand, ninety-one".