1993430 has 8 divisors (see below), whose sum is σ = 3588192. Its totient is φ = 797368.

The previous prime is 1993417. The next prime is 1993441. The reversal of 1993430 is 343991.

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

It is a junction number, because it is equal to n+sod(n) for n = 1993393 and 1993402.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 99662 + ... + 99681.

It is an arithmetic number, because the mean of its divisors is an integer number (448524).

2^1993430 is an apocalyptic number.

1993430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1993430 is a deficient number, since it is larger than the sum of its proper divisors (1594762).

1993430 is a wasteful number, since it uses less digits than its factorization.

1993430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199350.

The product of its (nonzero) digits is 2916, while the sum is 29.

The square root of 1993430 is about 1411.8888058201. Note that the first 4 decimals coincide. The cubic root of 1993430 is about 125.8539922905.

The spelling of 1993430 in words is "one million, nine hundred ninety-three thousand, four hundred thirty".