442279937 has 4 divisors (see below), whose sum is σ = 482487216. Its totient is φ = 402072660.

The previous prime is 442279933. The next prime is 442279963. The reversal of 442279937 is 739972244.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 442279937 - 2² = 442279933 is a prime.

It is a super-2 number, since 2×442279937² = 391223085345447938, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 442279891 and 442279900.

It is not an unprimeable number, because it can be changed into a prime (442279933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20103623 + ... + 20103644.

It is an arithmetic number, because the mean of its divisors is an integer number (120621804).

Almost surely, 2^442279937 is an apocalyptic number.

It is an amenable number.

442279937 is a deficient number, since it is larger than the sum of its proper divisors (40207279).

442279937 is a wasteful number, since it uses less digits than its factorization.

442279937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40207278.

The product of its digits is 762048, while the sum is 47.

The square root of 442279937 is about 21030.4526104409. The cubic root of 442279937 is about 761.9019405003.

The spelling of 442279937 in words is "four hundred forty-two million, two hundred seventy-nine thousand, nine hundred thirty-seven".