5400806857 has 8 divisors (see below), whose sum is σ = 5738293800. Its totient is φ = 5083107712.

The previous prime is 5400806849. The next prime is 5400806869. The reversal of 5400806857 is 7586080045.

It can be written as a sum of positive squares in 4 ways, for example, as 2287613241 + 3113193616 = 47829^2 + 55796^2 .

It is not a de Polignac number, because 5400806857 - 2³ = 5400806849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5400806557) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 544732 + ... + 554557.

It is an arithmetic number, because the mean of its divisors is an integer number (717286725).

Almost surely, 2^5400806857 is an apocalyptic number.

It is an amenable number.

5400806857 is a deficient number, since it is larger than the sum of its proper divisors (337486943).

5400806857 is an equidigital number, since it uses as much as digits as its factorization.

5400806857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1099340 (or 1099306 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 43.

The square root of 5400806857 is about 73490.1820449507. The cubic root of 5400806857 is about 1754.4980187308.

The spelling of 5400806857 in words is "five billion, four hundred million, eight hundred six thousand, eight hundred fifty-seven".