9990224421 has 8 divisors (see below), whose sum is σ = 13329360384. Its totient is φ = 6655619040.

The previous prime is 9990224399. The next prime is 9990224473. The reversal of 9990224421 is 1244220999.

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

It is not a de Polignac number, because 9990224421 - 2¹¹ = 9990222373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9990224221) 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, 1127496 + ... + 1136321.

It is an arithmetic number, because the mean of its divisors is an integer number (1666170048).

Almost surely, 2^9990224421 is an apocalyptic number.

It is an amenable number.

9990224421 is a deficient number, since it is larger than the sum of its proper divisors (3339135963).

9990224421 is a wasteful number, since it uses less digits than its factorization.

9990224421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2265291.

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 9990224421 is about 99951.1101539147. The cubic root of 9990224421 is about 2153.7324329327.

The spelling of 9990224421 in words is "nine billion, nine hundred ninety million, two hundred twenty-four thousand, four hundred twenty-one".