99793421 has 8 divisors (see below), whose sum is σ = 122822784. Its totient is φ = 78957360.

The previous prime is 99793399. The next prime is 99793427. The reversal of 99793421 is 12439799.

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-99793421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99793427) 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, 548225 + ... + 548406.

It is an arithmetic number, because the mean of its divisors is an integer number (15352848).

Almost surely, 2^99793421 is an apocalyptic number.

99793421 is a gapful number since it is divisible by the number (91) formed by its first and last digit.

It is an amenable number.

99793421 is a deficient number, since it is larger than the sum of its proper divisors (23029363).

99793421 is a wasteful number, since it uses less digits than its factorization.

99793421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1096651.

The product of its digits is 122472, while the sum is 44.

The square root of 99793421 is about 9989.6657101226. The cubic root of 99793421 is about 463.8390447604.

The spelling of 99793421 in words is "ninety-nine million, seven hundred ninety-three thousand, four hundred twenty-one".