1940417 has 4 divisors (see below), whose sum is σ = 1959360. Its totient is φ = 1921476.

The previous prime is 1940401. The next prime is 1940423. The reversal of 1940417 is 7140491.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7140491 = 281 ⋅25411.

It is a cyclic number.

It is not a de Polignac number, because 1940417 - 2⁴ = 1940401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1940437) 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, 9317 + ... + 9522.

It is an arithmetic number, because the mean of its divisors is an integer number (489840).

2^1940417 is an apocalyptic number.

It is an amenable number.

1940417 is a deficient number, since it is larger than the sum of its proper divisors (18943).

1940417 is a wasteful number, since it uses less digits than its factorization.

1940417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18942.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 1940417 is about 1392.9885139512. The cubic root of 1940417 is about 124.7283058863.

The spelling of 1940417 in words is "one million, nine hundred forty thousand, four hundred seventeen".