1947993 has 8 divisors (see below), whose sum is σ = 2604000. Its totient is φ = 1295328.

The previous prime is 1947991. The next prime is 1947997. The reversal of 1947993 is 3997491.

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

It is not a de Polignac number, because 1947993 - 2¹ = 1947991 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1947991) 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, 1333 + ... + 2381.

It is an arithmetic number, because the mean of its divisors is an integer number (325500).

2^1947993 is an apocalyptic number.

It is an amenable number.

1947993 is a deficient number, since it is larger than the sum of its proper divisors (656007).

1947993 is a wasteful number, since it uses less digits than its factorization.

1947993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1671.

The product of its digits is 61236, while the sum is 42.

The square root of 1947993 is about 1395.7051980988. The cubic root of 1947993 is about 124.8904213015.

The spelling of 1947993 in words is "one million, nine hundred forty-seven thousand, nine hundred ninety-three".