903349499809 has 3 divisors (see below), whose sum is σ = 903350450257. Its totient is φ = 903348549362.

The previous prime is 903349499791. The next prime is 903349499813. The reversal of 903349499809 is 908994943309.

The square root of 903349499809 is 950447.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 903349499809 - 2⁷ = 903349499681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (903349496809) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 475224 + ... + 1425670.

Almost surely, 2^903349499809 is an apocalyptic number.

903349499809 is the 950447-th square number.

903349499809 is the 475224-th centered octagonal number.

It is an amenable number.

903349499809 is a deficient number, since it is larger than the sum of its proper divisors (950448).

903349499809 is an frugal number, since it uses more digits than its factorization.

903349499809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1900894 (or 950447 counting only the distinct ones).

The product of its (nonzero) digits is 68024448, while the sum is 67.

The spelling of 903349499809 in words is "nine hundred three billion, three hundred forty-nine million, four hundred ninety-nine thousand, eight hundred nine".