442191448 has 8 divisors (see below), whose sum is σ = 829108980. Its totient is φ = 221095720.

The previous prime is 442191439. The next prime is 442191461. The reversal of 442191448 is 844191244.

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27636958 + ... + 27636973.

Almost surely, 2^442191448 is an apocalyptic number.

It is an amenable number.

442191448 is a deficient number, since it is larger than the sum of its proper divisors (386917532).

442191448 is a wasteful number, since it uses less digits than its factorization.

442191448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55273937 (or 55273933 counting only the distinct ones).

The product of its digits is 36864, while the sum is 37.

The square root of 442191448 is about 21028.3486750624. The cubic root of 442191448 is about 761.8511246918.

It can be divided in two parts, 442 and 191448, that added together give a triangular number (191890 = T₆₁₉).

The spelling of 442191448 in words is "four hundred forty-two million, one hundred ninety-one thousand, four hundred forty-eight".