99220709 has 8 divisors (see below), whose sum is σ = 115254528. Its totient is φ = 83651760.

The previous prime is 99220699. The next prime is 99220711. The reversal of 99220709 is 90702299.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99220709 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 (99222709) 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, 115757 + ... + 116610.

It is an arithmetic number, because the mean of its divisors is an integer number (14406816).

Almost surely, 2^99220709 is an apocalyptic number.

It is an amenable number.

99220709 is a deficient number, since it is larger than the sum of its proper divisors (16033819).

99220709 is a wasteful number, since it uses less digits than its factorization.

99220709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232435.

The product of its (nonzero) digits is 20412, while the sum is 38.

The square root of 99220709 is about 9960.9592409567. The cubic root of 99220709 is about 462.9500215837.

The spelling of 99220709 in words is "ninety-nine million, two hundred twenty thousand, seven hundred nine".