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442223079 = 31391060487
BaseRepresentation
bin11010010110111…
…100100111100111
31010211010021000120
4122112330213213
51401202114304
6111514213023
713646556054
oct3226744747
91124107016
10442223079
11207694821
12104124173
1370805c7c
1442a3602b
1528c540d9
hex1a5bc9e7

442223079 has 8 divisors (see below), whose sum is σ = 593873280. Its totient is φ = 292694136.

The previous prime is 442223069. The next prime is 442223179. The reversal of 442223079 is 970322244.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 442223079 - 24 = 442223063 is a prime.

It is a super-2 number, since 2×4422230792 = 391122503200480482, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442223069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 529827 + ... + 530660.

It is an arithmetic number, because the mean of its divisors is an integer number (74234160).

Almost surely, 2442223079 is an apocalyptic number.

442223079 is a deficient number, since it is larger than the sum of its proper divisors (151650201).

442223079 is a wasteful number, since it uses less digits than its factorization.

442223079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1060629.

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 442223079 is about 21029.1007653680. The cubic root of 442223079 is about 761.8692899296.

The spelling of 442223079 in words is "four hundred forty-two million, two hundred twenty-three thousand, seventy-nine".

Divisors: 1 3 139 417 1060487 3181461 147407693 442223079