1047491447 has 2 divisors, whose sum is σ = 1047491448. Its totient is φ = 1047491446.

The previous prime is 1047491441. The next prime is 1047491449. The reversal of 1047491447 is 7441947401.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1047491447 - 2⁶ = 1047491383 is a prime.

Together with 1047491449, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1047491441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 523745723 + 523745724.

It is an arithmetic number, because the mean of its divisors is an integer number (523745724).

Almost surely, 2^1047491447 is an apocalyptic number.

1047491447 is a deficient number, since it is larger than the sum of its proper divisors (1).

1047491447 is an equidigital number, since it uses as much as digits as its factorization.

1047491447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112896, while the sum is 41.

The square root of 1047491447 is about 32364.9725320446. The cubic root of 1047491447 is about 1015.5862878272.

The spelling of 1047491447 in words is "one billion, forty-seven million, four hundred ninety-one thousand, four hundred forty-seven".