47249608909 has 4 divisors (see below), whose sum is σ = 48526625404. Its totient is φ = 45972592416.

The previous prime is 47249608891. The next prime is 47249608943. The reversal of 47249608909 is 90980694274.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 44942728009 + 2306880900 = 211997^2 + 48030^2 .

It is a cyclic number.

It is not a de Polignac number, because 47249608909 - 2⁵ = 47249608877 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 (47249648909) 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, 638508192 + ... + 638508265.

It is an arithmetic number, because the mean of its divisors is an integer number (12131656351).

Almost surely, 2^47249608909 is an apocalyptic number.

It is an amenable number.

47249608909 is a deficient number, since it is larger than the sum of its proper divisors (1277016495).

47249608909 is a wasteful number, since it uses less digits than its factorization.

47249608909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1277016494.

The product of its (nonzero) digits is 7838208, while the sum is 58.

The spelling of 47249608909 in words is "forty-seven billion, two hundred forty-nine million, six hundred eight thousand, nine hundred nine".