1003949917 has 4 divisors (see below), whose sum is σ = 1005147360. Its totient is φ = 1002752476.

The previous prime is 1003949893. The next prime is 1003949951. The reversal of 1003949917 is 7199493001.

It is a happy number.

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: 7199493001 = 33191 ⋅216911.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1003949917 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 (1003949117) 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, 597463 + ... + 599140.

It is an arithmetic number, because the mean of its divisors is an integer number (251286840).

Almost surely, 2^1003949917 is an apocalyptic number.

It is an amenable number.

1003949917 is a deficient number, since it is larger than the sum of its proper divisors (1197443).

1003949917 is an equidigital number, since it uses as much as digits as its factorization.

1003949917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1197442.

The product of its (nonzero) digits is 61236, while the sum is 43.

The square root of 1003949917 is about 31685.1687229215. The cubic root of 1003949917 is about 1001.3149092558.

The spelling of 1003949917 in words is "one billion, three million, nine hundred forty-nine thousand, nine hundred seventeen".