99667959 has 8 divisors (see below), whose sum is σ = 133165440. Its totient is φ = 66307896.

The previous prime is 99667951. The next prime is 99667963. The reversal of 99667959 is 95976699.

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

It is not a de Polignac number, because 99667959 - 2³ = 99667951 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99667951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32649 + ... + 35570.

It is an arithmetic number, because the mean of its divisors is an integer number (16645680).

Almost surely, 2^99667959 is an apocalyptic number.

99667959 is a deficient number, since it is larger than the sum of its proper divisors (33497481).

99667959 is a wasteful number, since it uses less digits than its factorization.

99667959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68709.

The product of its digits is 8266860, while the sum is 60.

The square root of 99667959 is about 9983.3841456692. The cubic root of 99667959 is about 463.6445811098.

The spelling of 99667959 in words is "ninety-nine million, six hundred sixty-seven thousand, nine hundred fifty-nine".