1047571439 has 4 divisors (see below), whose sum is σ = 1047740280. Its totient is φ = 1047402600.

The previous prime is 1047571429. The next prime is 1047571451. The reversal of 1047571439 is 9341757401.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1047571439 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1047571396 and 1047571405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1047571429) 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, 74744 + ... + 87645.

It is an arithmetic number, because the mean of its divisors is an integer number (261935070).

Almost surely, 2^1047571439 is an apocalyptic number.

1047571439 is a deficient number, since it is larger than the sum of its proper divisors (168841).

1047571439 is an equidigital number, since it uses as much as digits as its factorization.

1047571439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168840.

The product of its (nonzero) digits is 105840, while the sum is 41.

The square root of 1047571439 is about 32366.2082888929. The cubic root of 1047571439 is about 1015.6121390201.

The spelling of 1047571439 in words is "one billion, forty-seven million, five hundred seventy-one thousand, four hundred thirty-nine".