805980955 has 16 divisors (see below), whose sum is σ = 1055849760. Its totient is φ = 587029248.

The previous prime is 805980943. The next prime is 805980971. The reversal of 805980955 is 559089508.

It is a happy number.

It is not a de Polignac number, because 805980955 - 2¹³ = 805972763 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 805980899 and 805980908.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80185 + ... + 89674.

It is an arithmetic number, because the mean of its divisors is an integer number (65990610).

Almost surely, 2^805980955 is an apocalyptic number.

805980955 is a deficient number, since it is larger than the sum of its proper divisors (249868805).

805980955 is a wasteful number, since it uses less digits than its factorization.

805980955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169950.

The product of its (nonzero) digits is 648000, while the sum is 49.

The square root of 805980955 is about 28389.8037154187. The cubic root of 805980955 is about 930.6254531663.

The spelling of 805980955 in words is "eight hundred five million, nine hundred eighty thousand, nine hundred fifty-five".