99021412 has 12 divisors (see below), whose sum is σ = 198042880. Its totient is φ = 42437736.

The previous prime is 99021353. The next prime is 99021427. The reversal of 99021412 is 21412099.

It is a happy number.

99021412 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 3536479 = 99021412 / (9 + 9 + 0 + 2 + 1 + 4 + 1 + 2).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1768212 + ... + 1768267.

Almost surely, 2^99021412 is an apocalyptic number.

It is an amenable number.

99021412 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

99021412 is a wasteful number, since it uses less digits than its factorization.

99021412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3536490 (or 3536488 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 99021412 is about 9950.9503063778. The cubic root of 99021412 is about 462.6398497949.

The spelling of 99021412 in words is "ninety-nine million, twenty-one thousand, four hundred twelve".