1047857039 has 4 divisors (see below), whose sum is σ = 1048048056. Its totient is φ = 1047666024.

The previous prime is 1047856993. The next prime is 1047857053. The reversal of 1047857039 is 9307587401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9307587401 = 7 ⋅1329655343.

It is a cyclic number.

It is not a de Polignac number, because 1047857039 - 2¹² = 1047852943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1047857089) 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, 87029 + ... + 98334.

It is an arithmetic number, because the mean of its divisors is an integer number (262012014).

Almost surely, 2^1047857039 is an apocalyptic number.

1047857039 is a deficient number, since it is larger than the sum of its proper divisors (191017).

1047857039 is an equidigital number, since it uses as much as digits as its factorization.

1047857039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191016.

The product of its (nonzero) digits is 211680, while the sum is 44.

The square root of 1047857039 is about 32370.6199971517. The cubic root of 1047857039 is about 1015.7044262731.

The spelling of 1047857039 in words is "one billion, forty-seven million, eight hundred fifty-seven thousand, thirty-nine".