9900451 has 8 divisors (see below), whose sum is σ = 10828800. Its totient is φ = 8976840.

The previous prime is 9900437. The next prime is 9900461. The reversal of 9900451 is 1540099.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9900451 is a prime.

It is a Duffinian number.

9900451 is a modest number, since divided by 451 gives 99 as remainder.

It is not an unprimeable number, because it can be changed into a prime (9900421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4330 + ... + 6208.

It is an arithmetic number, because the mean of its divisors is an integer number (1353600).

Almost surely, 2^9900451 is an apocalyptic number.

9900451 is a deficient number, since it is larger than the sum of its proper divisors (928349).

9900451 is a wasteful number, since it uses less digits than its factorization.

9900451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2369.

The product of its (nonzero) digits is 1620, while the sum is 28.

The square root of 9900451 is about 3146.4982122989. The cubic root of 9900451 is about 214.7261774596.

The spelling of 9900451 in words is "nine million, nine hundred thousand, four hundred fifty-one".