1039491517 has 2 divisors, whose sum is σ = 1039491518. Its totient is φ = 1039491516.

The previous prime is 1039491487. The next prime is 1039491569. The reversal of 1039491517 is 7151949301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 677769156 + 361722361 = 26034^2 + 19019^2 .

It is a cyclic number.

It is not a de Polignac number, because 1039491517 - 2⁷ = 1039491389 is a prime.

It is a super-2 number, since 2×1039491517² = 2161085227829922578, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1039491517.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1039491017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 519745758 + 519745759.

It is an arithmetic number, because the mean of its divisors is an integer number (519745759).

Almost surely, 2^1039491517 is an apocalyptic number.

It is an amenable number.

1039491517 is a deficient number, since it is larger than the sum of its proper divisors (1).

1039491517 is an equidigital number, since it uses as much as digits as its factorization.

1039491517 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34020, while the sum is 40.

The square root of 1039491517 is about 32241.1463350793. The cubic root of 1039491517 is about 1012.9942569238.

The spelling of 1039491517 in words is "one billion, thirty-nine million, four hundred ninety-one thousand, five hundred seventeen".