99909727 has 8 divisors (see below), whose sum is σ = 104306400. Its totient is φ = 95576544.

The previous prime is 99909721. The next prime is 99909739. The reversal of 99909727 is 72790999.

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 99909727 - 2⁷ = 99909599 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 (99909721) 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, 12643 + ... + 18964.

It is an arithmetic number, because the mean of its divisors is an integer number (13038300).

Almost surely, 2^99909727 is an apocalyptic number.

99909727 is the 6322-nd heptagonal number.

99909727 is a deficient number, since it is larger than the sum of its proper divisors (4396673).

99909727 is a wasteful number, since it uses less digits than its factorization.

99909727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31745.

The product of its (nonzero) digits is 642978, while the sum is 52.

The square root of 99909727 is about 9995.4853308881. The cubic root of 99909727 is about 464.0191712625.

The spelling of 99909727 in words is "ninety-nine million, nine hundred nine thousand, seven hundred twenty-seven".