1427746847 has 4 divisors (see below), whose sum is σ = 1429508136. Its totient is φ = 1425985560.

The previous prime is 1427746843. The next prime is 1427746867. The reversal of 1427746847 is 7486477241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7486477241 = 34033 ⋅219977.

It is a cyclic number.

It is not a de Polignac number, because 1427746847 - 2² = 1427746843 is a prime.

It is a super-2 number, since 2×1427746847² = 4076922118236882818, 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 = 1427746795 and 1427746804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1427746843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 879428 + ... + 881049.

It is an arithmetic number, because the mean of its divisors is an integer number (357377034).

Almost surely, 2^1427746847 is an apocalyptic number.

1427746847 is a deficient number, since it is larger than the sum of its proper divisors (1761289).

1427746847 is an equidigital number, since it uses as much as digits as its factorization.

1427746847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1761288.

The product of its digits is 2107392, while the sum is 50.

The square root of 1427746847 is about 37785.5375375288. The cubic root of 1427746847 is about 1126.0311459804.

The spelling of 1427746847 in words is "one billion, four hundred twenty-seven million, seven hundred forty-six thousand, eight hundred forty-seven".