47790805 has 8 divisors (see below), whose sum is σ = 57407832. Its totient is φ = 38193408.

The previous prime is 47790797. The next prime is 47790823. The reversal of 47790805 is 50809774.

It can be written as a sum of positive squares in 4 ways, for example, as 11682724 + 36108081 = 3418^2 + 6009^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 47790805 - 2³ = 47790797 is a prime.

It is a super-2 number, since 2×47790805² = 4567922085096050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1129 + ... + 9841.

It is an arithmetic number, because the mean of its divisors is an integer number (7175979).

Almost surely, 2^47790805 is an apocalyptic number.

It is an amenable number.

47790805 is a deficient number, since it is larger than the sum of its proper divisors (9617027).

47790805 is a wasteful number, since it uses less digits than its factorization.

47790805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9815.

The product of its (nonzero) digits is 70560, while the sum is 40.

The square root of 47790805 is about 6913.0893962106. The cubic root of 47790805 is about 362.8953878465.

The spelling of 47790805 in words is "forty-seven million, seven hundred ninety thousand, eight hundred five".