179421993 has 8 divisors (see below), whose sum is σ = 265810400. Its totient is φ = 119614644.

The previous prime is 179421973. The next prime is 179422007. The reversal of 179421993 is 399124971.

It is not a de Polignac number, because 179421993 - 2¹⁴ = 179405609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (179421973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3322603 + ... + 3322656.

It is an arithmetic number, because the mean of its divisors is an integer number (33226300).

Almost surely, 2^179421993 is an apocalyptic number.

It is an amenable number.

179421993 is a deficient number, since it is larger than the sum of its proper divisors (86388407).

179421993 is an equidigital number, since it uses as much as digits as its factorization.

179421993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6645268 (or 6645262 counting only the distinct ones).

The product of its digits is 122472, while the sum is 45.

The square root of 179421993 is about 13394.8494952351. The cubic root of 179421993 is about 564.0166077047.

The spelling of 179421993 in words is "one hundred seventy-nine million, four hundred twenty-one thousand, nine hundred ninety-three".