1477994447 has 2 divisors, whose sum is σ = 1477994448. Its totient is φ = 1477994446.

The previous prime is 1477994423. The next prime is 1477994449. The reversal of 1477994447 is 7444997741.

It is a strong prime.

It is an emirp because it is prime and its reverse (7444997741) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1477994447 - 2¹⁰ = 1477993423 is a prime.

Together with 1477994449, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1477994392 and 1477994401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1477994449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 738997223 + 738997224.

It is an arithmetic number, because the mean of its divisors is an integer number (738997224).

Almost surely, 2^1477994447 is an apocalyptic number.

1477994447 is a deficient number, since it is larger than the sum of its proper divisors (1).

1477994447 is an equidigital number, since it uses as much as digits as its factorization.

1477994447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7112448, while the sum is 56.

The square root of 1477994447 is about 38444.6933529193. The cubic root of 1477994447 is about 1139.0888500287.

The spelling of 1477994447 in words is "one billion, four hundred seventy-seven million, nine hundred ninety-four thousand, four hundred forty-seven".