999260161 has 8 divisors (see below), whose sum is σ = 1006711200. Its totient is φ = 991830240.

The previous prime is 999260131. The next prime is 999260173. The reversal of 999260161 is 161062999.

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 999260161 - 2⁷ = 999260033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (999260131) 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, 96946 + ... + 106756.

It is an arithmetic number, because the mean of its divisors is an integer number (125838900).

It is a Proth number, since it is equal to 30495 ⋅ 2¹⁵ + 1 and 30495 < 2¹⁵.

Almost surely, 2^999260161 is an apocalyptic number.

It is an amenable number.

999260161 is a deficient number, since it is larger than the sum of its proper divisors (7451039).

999260161 is a wasteful number, since it uses less digits than its factorization.

999260161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10559.

The product of its (nonzero) digits is 52488, while the sum is 43.

The square root of 999260161 is about 31611.0765555367. The cubic root of 999260161 is about 999.7533261570.

The spelling of 999260161 in words is "nine hundred ninety-nine million, two hundred sixty thousand, one hundred sixty-one".