5805400985 has 4 divisors (see below), whose sum is σ = 6966481188. Its totient is φ = 4644320784.

The previous prime is 5805400949. The next prime is 5805400987. The reversal of 5805400985 is 5890045085.

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 1155252121 + 4650148864 = 33989^2 + 68192^2 .

It is a cyclic number.

It is not a de Polignac number, because 5805400985 - 2¹⁸ = 5805138841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5805400987) 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, 580540094 + ... + 580540103.

It is an arithmetic number, because the mean of its divisors is an integer number (1741620297).

Almost surely, 2^5805400985 is an apocalyptic number.

It is an amenable number.

5805400985 is a deficient number, since it is larger than the sum of its proper divisors (1161080203).

5805400985 is a wasteful number, since it uses less digits than its factorization.

5805400985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1161080202.

The product of its (nonzero) digits is 288000, while the sum is 44.

The square root of 5805400985 is about 76193.1820112535. The cubic root of 5805400985 is about 1797.2593049358.

The spelling of 5805400985 in words is "five billion, eight hundred five million, four hundred thousand, nine hundred eighty-five".