444428351 has 4 divisors (see below), whose sum is σ = 444585600. Its totient is φ = 444271104.

The previous prime is 444428339. The next prime is 444428363. The reversal of 444428351 is 153824444.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (444428339) and next prime (444428363).

It is a cyclic number.

It is not a de Polignac number, because 444428351 - 2¹⁰ = 444427327 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444428311) 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, 74306 + ... + 80063.

It is an arithmetic number, because the mean of its divisors is an integer number (111146400).

Almost surely, 2^444428351 is an apocalyptic number.

444428351 is a deficient number, since it is larger than the sum of its proper divisors (157249).

444428351 is a wasteful number, since it uses less digits than its factorization.

444428351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157248.

The product of its digits is 61440, while the sum is 35.

The square root of 444428351 is about 21081.4693747851. The cubic root of 444428351 is about 763.1336170602.

The spelling of 444428351 in words is "four hundred forty-four million, four hundred twenty-eight thousand, three hundred fifty-one".