40798484809 has 4 divisors (see below), whose sum is σ = 41009876116. Its totient is φ = 40587093504.

The previous prime is 40798484789. The next prime is 40798484813. The reversal of 40798484809 is 90848489704.

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 29010605625 + 11787879184 = 170325^2 + 108572^2 .

It is a cyclic number.

It is not a de Polignac number, because 40798484809 - 2⁵ = 40798484777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40798484869) 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, 105695364 + ... + 105695749.

It is an arithmetic number, because the mean of its divisors is an integer number (10252469029).

Almost surely, 2^40798484809 is an apocalyptic number.

It is an amenable number.

40798484809 is a deficient number, since it is larger than the sum of its proper divisors (211391307).

40798484809 is a wasteful number, since it uses less digits than its factorization.

40798484809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211391306.

The product of its (nonzero) digits is 18579456, while the sum is 61.

The spelling of 40798484809 in words is "forty billion, seven hundred ninety-eight million, four hundred eighty-four thousand, eight hundred nine".