160999441 has 4 divisors (see below), whose sum is σ = 161065584. Its totient is φ = 160933300.

The previous prime is 160999429. The next prime is 160999457. The reversal of 160999441 is 144999061.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 144999061 = 23 ⋅6304307.

It is a cyclic number.

It is not a de Polignac number, because 160999441 - 2⁵ = 160999409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (160999411) 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, 29275 + ... + 34336.

It is an arithmetic number, because the mean of its divisors is an integer number (40266396).

Almost surely, 2^160999441 is an apocalyptic number.

It is an amenable number.

160999441 is a deficient number, since it is larger than the sum of its proper divisors (66143).

160999441 is an equidigital number, since it uses as much as digits as its factorization.

160999441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66142.

The product of its (nonzero) digits is 69984, while the sum is 43.

The square root of 160999441 is about 12688.5555127445. Note that the first 4 decimals coincide. The cubic root of 160999441 is about 544.0115529283.

The spelling of 160999441 in words is "one hundred sixty million, nine hundred ninety-nine thousand, four hundred forty-one".