99671357 has 8 divisors (see below), whose sum is σ = 105804792. Its totient is φ = 93568000.

The previous prime is 99671269. The next prime is 99671381. The reversal of 99671357 is 75317699.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 22600516 + 77070841 = 4754^2 + 8779^2 .

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

It is not a de Polignac number, because 99671357 - 2¹² = 99667261 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 (99679357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 494 + ... + 14127.

It is an arithmetic number, because the mean of its divisors is an integer number (13225599).

Almost surely, 2^99671357 is an apocalyptic number.

It is an amenable number.

99671357 is a deficient number, since it is larger than the sum of its proper divisors (6133435).

99671357 is a wasteful number, since it uses less digits than its factorization.

99671357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15039.

The product of its digits is 357210, while the sum is 47.

The square root of 99671357 is about 9983.5543269920. The cubic root of 99671357 is about 463.6498500929.

The spelling of 99671357 in words is "ninety-nine million, six hundred seventy-one thousand, three hundred fifty-seven".