1914217 has 4 divisors (see below), whose sum is σ = 2026836. Its totient is φ = 1801600.

The previous prime is 1914197. The next prime is 1914239. The reversal of 1914217 is 7124191.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7124191 = 59 ⋅120749.

It can be written as a sum of positive squares in 2 ways, for example, as 1390041 + 524176 = 1179^2 + 724^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1914217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1914191 and 1914200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1914247) 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, 56284 + ... + 56317.

It is an arithmetic number, because the mean of its divisors is an integer number (506709).

2^1914217 is an apocalyptic number.

1914217 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1914217 is a deficient number, since it is larger than the sum of its proper divisors (112619).

1914217 is a wasteful number, since it uses less digits than its factorization.

1914217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112618.

The product of its digits is 504, while the sum is 25.

The square root of 1914217 is about 1383.5523119853. The cubic root of 1914217 is about 124.1643891499.

The spelling of 1914217 in words is "one million, nine hundred fourteen thousand, two hundred seventeen".