1939217 has 8 divisors (see below), whose sum is σ = 2258496. Its totient is φ = 1630512.

The previous prime is 1939187. The next prime is 1939229. The reversal of 1939217 is 7129391.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1939217 - 2¹² = 1935121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1939237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2243 + ... + 2984.

It is an arithmetic number, because the mean of its divisors is an integer number (282312).

2^1939217 is an apocalyptic number.

It is an amenable number.

1939217 is a deficient number, since it is larger than the sum of its proper divisors (319279).

1939217 is an equidigital number, since it uses as much as digits as its factorization.

1939217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5287.

The product of its digits is 3402, while the sum is 32.

The square root of 1939217 is about 1392.5577187320. The cubic root of 1939217 is about 124.7025889345.

The spelling of 1939217 in words is "one million, nine hundred thirty-nine thousand, two hundred seventeen".