442774371 has 16 divisors (see below), whose sum is σ = 636608000. Its totient is φ = 272121120.

The previous prime is 442774369. The next prime is 442774379. The reversal of 442774371 is 173477244.

It is not a de Polignac number, because 442774371 - 2¹ = 442774369 is a prime.

It is a super-2 number, since 2×442774371² = 392098287228891282, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442774379) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24630 + ... + 38628.

It is an arithmetic number, because the mean of its divisors is an integer number (39788000).

Almost surely, 2^442774371 is an apocalyptic number.

442774371 is a deficient number, since it is larger than the sum of its proper divisors (193833629).

442774371 is a wasteful number, since it uses less digits than its factorization.

442774371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14826.

The product of its digits is 131712, while the sum is 39.

The square root of 442774371 is about 21042.2045185385. The cubic root of 442774371 is about 762.1857501438.

The spelling of 442774371 in words is "four hundred forty-two million, seven hundred seventy-four thousand, three hundred seventy-one".