5009905 has 4 divisors (see below), whose sum is σ = 6011892. Its totient is φ = 4007920.

The previous prime is 5009897. The next prime is 5009909. The reversal of 5009905 is 5099005.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5099005 = 5 ⋅1019801.

It can be written as a sum of positive squares in 2 ways, for example, as 2768896 + 2241009 = 1664^2 + 1497^2 .

It is not a de Polignac number, because 5009905 - 2³ = 5009897 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5009909) 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, 500986 + ... + 500995.

It is an arithmetic number, because the mean of its divisors is an integer number (1502973).

Almost surely, 2^5009905 is an apocalyptic number.

It is an amenable number.

5009905 is a deficient number, since it is larger than the sum of its proper divisors (1001987).

5009905 is a wasteful number, since it uses less digits than its factorization.

5009905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1001986.

The product of its (nonzero) digits is 2025, while the sum is 28.

The square root of 5009905 is about 2238.2817070244. The cubic root of 5009905 is about 171.1104355995.

The spelling of 5009905 in words is "five million, nine thousand, nine hundred five".