99157643 has 8 divisors (see below), whose sum is σ = 107020368. Its totient is φ = 91328544.

The previous prime is 99157633. The next prime is 99157661. The reversal of 99157643 is 34675199.

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 99157643 - 2¹⁰ = 99156619 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 99157594 and 99157603.

It is not an unprimeable number, because it can be changed into a prime (99157603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2096 + ... + 14237.

It is an arithmetic number, because the mean of its divisors is an integer number (13377546).

Almost surely, 2^99157643 is an apocalyptic number.

99157643 is a deficient number, since it is larger than the sum of its proper divisors (7862725).

99157643 is a wasteful number, since it uses less digits than its factorization.

99157643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16813.

The product of its digits is 204120, while the sum is 44.

The square root of 99157643 is about 9957.7930787901. The cubic root of 99157643 is about 462.8519150680.

The spelling of 99157643 in words is "ninety-nine million, one hundred fifty-seven thousand, six hundred forty-three".