1047447129 has 8 divisors (see below), whose sum is σ = 1478748960. Its totient is φ = 657221696.

The previous prime is 1047447103. The next prime is 1047447157. The reversal of 1047447129 is 9217447401.

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

It is a cyclic number.

It is not a de Polignac number, because 1047447129 - 2²³ = 1039058521 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1047447179) 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, 10269039 + ... + 10269140.

It is an arithmetic number, because the mean of its divisors is an integer number (184843620).

Almost surely, 2^1047447129 is an apocalyptic number.

It is an amenable number.

1047447129 is a deficient number, since it is larger than the sum of its proper divisors (431301831).

1047447129 is a wasteful number, since it uses less digits than its factorization.

1047447129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20538199.

The product of its (nonzero) digits is 56448, while the sum is 39.

The square root of 1047447129 is about 32364.2878648673. The cubic root of 1047447129 is about 1015.5719649138.

The spelling of 1047447129 in words is "one billion, forty-seven million, four hundred forty-seven thousand, one hundred twenty-nine".