1914391 has 4 divisors (see below), whose sum is σ = 1943032. Its totient is φ = 1885752.

The previous prime is 1914389. The next prime is 1914427. The reversal of 1914391 is 1934191.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1914391 - 2¹ = 1914389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1914361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14220 + ... + 14353.

It is an arithmetic number, because the mean of its divisors is an integer number (485758).

2^1914391 is an apocalyptic number.

1914391 is a deficient number, since it is larger than the sum of its proper divisors (28641).

1914391 is an equidigital number, since it uses as much as digits as its factorization.

1914391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28640.

The product of its digits is 972, while the sum is 28.

The square root of 1914391 is about 1383.6151921687. The cubic root of 1914391 is about 124.1681511666.

The spelling of 1914391 in words is "one million, nine hundred fourteen thousand, three hundred ninety-one".