1047434387 has 8 divisors (see below), whose sum is σ = 1062973440. Its totient is φ = 1031917320.

The previous prime is 1047434371. The next prime is 1047434411. The reversal of 1047434387 is 7834347401.

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 1047434387 - 2⁴ = 1047434371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1047434317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107438 + ... + 116780.

It is an arithmetic number, because the mean of its divisors is an integer number (132871680).

Almost surely, 2^1047434387 is an apocalyptic number.

1047434387 is a deficient number, since it is larger than the sum of its proper divisors (15539053).

1047434387 is an equidigital number, since it uses as much as digits as its factorization.

1047434387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10993.

The product of its (nonzero) digits is 225792, while the sum is 41.

The square root of 1047434387 is about 32364.0910114899. The cubic root of 1047434387 is about 1015.5678468155.

The spelling of 1047434387 in words is "one billion, forty-seven million, four hundred thirty-four thousand, three hundred eighty-seven".