444535421 has 8 divisors (see below), whose sum is σ = 506032704. Its totient is φ = 386552320.

The previous prime is 444535409. The next prime is 444535451. The reversal of 444535421 is 124535444.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-444535421 is a prime.

It is a super-2 number, since 2×444535421² = 395223481047294482, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444535451) 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, 878276 + ... + 878781.

It is an arithmetic number, because the mean of its divisors is an integer number (63254088).

Almost surely, 2^444535421 is an apocalyptic number.

It is an amenable number.

444535421 is a deficient number, since it is larger than the sum of its proper divisors (61497283).

444535421 is a wasteful number, since it uses less digits than its factorization.

444535421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1757091.

The product of its digits is 38400, while the sum is 32.

The square root of 444535421 is about 21084.0086558510. The cubic root of 444535421 is about 763.1948958958.

The spelling of 444535421 in words is "four hundred forty-four million, five hundred thirty-five thousand, four hundred twenty-one".