99210797 has 4 divisors (see below), whose sum is σ = 113383776. Its totient is φ = 85037820.

The previous prime is 99210781. The next prime is 99210821. The reversal of 99210797 is 79701299.

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: 79701299 = 641 ⋅124339.

It is not a de Polignac number, because 99210797 - 2⁴ = 99210781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99210197) 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, 7086479 + ... + 7086492.

It is an arithmetic number, because the mean of its divisors is an integer number (28345944).

Almost surely, 2^99210797 is an apocalyptic number.

It is an amenable number.

99210797 is a deficient number, since it is larger than the sum of its proper divisors (14172979).

99210797 is a wasteful number, since it uses less digits than its factorization.

99210797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14172978.

The product of its (nonzero) digits is 71442, while the sum is 44.

The square root of 99210797 is about 9960.4616860866. The cubic root of 99210797 is about 462.9346050661.

The spelling of 99210797 in words is "ninety-nine million, two hundred ten thousand, seven hundred ninety-seven".