444453161 has 4 divisors (see below), whose sum is σ = 455293524. Its totient is φ = 433612800.

The previous prime is 444453133. The next prime is 444453199. The reversal of 444453161 is 161354444.

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 11022400 + 433430761 = 3320^2 + 20819^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-444453161 is a prime.

It is a super-2 number, since 2×444453161² = 395077224645783842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (444450161) 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, 5420120 + ... + 5420201.

It is an arithmetic number, because the mean of its divisors is an integer number (113823381).

Almost surely, 2^444453161 is an apocalyptic number.

444453161 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

444453161 is a deficient number, since it is larger than the sum of its proper divisors (10840363).

444453161 is a wasteful number, since it uses less digits than its factorization.

444453161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10840362.

The product of its digits is 23040, while the sum is 32.

The square root of 444453161 is about 21082.0577980424. The cubic root of 444453161 is about 763.1478173189.

The spelling of 444453161 in words is "four hundred forty-four million, four hundred fifty-three thousand, one hundred sixty-one".