2084406857 has 4 divisors (see below), whose sum is σ = 2244745860. Its totient is φ = 1924067856.

The previous prime is 2084406847. The next prime is 2084406859. The reversal of 2084406857 is 7586044802.

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 1109156416 + 975250441 = 33304^2 + 31229^2 .

It is a cyclic number.

It is not a de Polignac number, because 2084406857 - 2¹⁰ = 2084405833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2084406859) 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, 80169482 + ... + 80169507.

It is an arithmetic number, because the mean of its divisors is an integer number (561186465).

Almost surely, 2^2084406857 is an apocalyptic number.

It is an amenable number.

2084406857 is a deficient number, since it is larger than the sum of its proper divisors (160339003).

2084406857 is a wasteful number, since it uses less digits than its factorization.

2084406857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160339002.

The product of its (nonzero) digits is 430080, while the sum is 44.

The square root of 2084406857 is about 45655.3048067801. The cubic root of 2084406857 is about 1277.4017233360.

The spelling of 2084406857 in words is "two billion, eighty-four million, four hundred six thousand, eight hundred fifty-seven".