442887401 has 16 divisors (see below), whose sum is σ = 495652608. Its totient is φ = 392254800.

The previous prime is 442887377. The next prime is 442887413. The reversal of 442887401 is 104788244.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 442887401 - 2¹⁴ = 442871017 is a prime.

It is a super-2 number, since 2×442887401² = 392298499929069602, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (442887461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 231290 + ... + 233196.

It is an arithmetic number, because the mean of its divisors is an integer number (30978288).

Almost surely, 2^442887401 is an apocalyptic number.

It is an amenable number.

442887401 is a deficient number, since it is larger than the sum of its proper divisors (52765207).

442887401 is a wasteful number, since it uses less digits than its factorization.

442887401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2452.

The product of its (nonzero) digits is 57344, while the sum is 38.

The square root of 442887401 is about 21044.8901398891. The cubic root of 442887401 is about 762.2506007248.

The spelling of 442887401 in words is "four hundred forty-two million, eight hundred eighty-seven thousand, four hundred one".