99457197 has 8 divisors (see below), whose sum is σ = 151553856. Its totient is φ = 56832672.

The previous prime is 99457177. The next prime is 99457199. The reversal of 99457197 is 79175499.

It is a happy number.

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

It is not a de Polignac number, because 99457197 - 2¹⁶ = 99391661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99457199) 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, 2368008 + ... + 2368049.

It is an arithmetic number, because the mean of its divisors is an integer number (18944232).

Almost surely, 2^99457197 is an apocalyptic number.

It is an amenable number.

99457197 is a deficient number, since it is larger than the sum of its proper divisors (52096659).

99457197 is a wasteful number, since it uses less digits than its factorization.

99457197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4736067.

The product of its digits is 714420, while the sum is 51.

The square root of 99457197 is about 9972.8229203170. The cubic root of 99457197 is about 463.3175364534.

The spelling of 99457197 in words is "ninety-nine million, four hundred fifty-seven thousand, one hundred ninety-seven".