99211409 has 16 divisors (see below), whose sum is σ = 110151360. Its totient is φ = 89346400.

The previous prime is 99211373. The next prime is 99211423. The reversal of 99211409 is 90411299.

It is not a de Polignac number, because 99211409 - 2¹² = 99207313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (99211429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 174077 + ... + 174645.

It is an arithmetic number, because the mean of its divisors is an integer number (6884460).

Almost surely, 2^99211409 is an apocalyptic number.

It is an amenable number.

99211409 is a deficient number, since it is larger than the sum of its proper divisors (10939951).

99211409 is a wasteful number, since it uses less digits than its factorization.

99211409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 733 (or 711 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 35.

The square root of 99211409 is about 9960.4924075068. The cubic root of 99211409 is about 462.9355569631.

The spelling of 99211409 in words is "ninety-nine million, two hundred eleven thousand, four hundred nine".