1039989547 has 2 divisors, whose sum is σ = 1039989548. Its totient is φ = 1039989546.

The previous prime is 1039989541. The next prime is 1039989557. The reversal of 1039989547 is 7459899301.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1039989547 is a prime.

It is not a weakly prime, because it can be changed into another prime (1039989541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 519994773 + 519994774.

It is an arithmetic number, because the mean of its divisors is an integer number (519994774).

Almost surely, 2^1039989547 is an apocalyptic number.

1039989547 is a deficient number, since it is larger than the sum of its proper divisors (1).

1039989547 is an equidigital number, since it uses as much as digits as its factorization.

1039989547 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2449440, while the sum is 55.

The square root of 1039989547 is about 32248.8689259019. The cubic root of 1039989547 is about 1013.1560094001.

The spelling of 1039989547 in words is "one billion, thirty-nine million, nine hundred eighty-nine thousand, five hundred forty-seven".