1039989557 has 2 divisors, whose sum is σ = 1039989558. Its totient is φ = 1039989556.

The previous prime is 1039989547. The next prime is 1039989583. The reversal of 1039989557 is 7559899301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1024576081 + 15413476 = 32009^2 + 3926^2 .

It is an emirp because it is prime and its reverse (7559899301) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1039989557 - 2⁴ = 1039989541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1039989547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 519994778 + 519994779.

It is an arithmetic number, because the mean of its divisors is an integer number (519994779).

Almost surely, 2^1039989557 is an apocalyptic number.

It is an amenable number.

1039989557 is a deficient number, since it is larger than the sum of its proper divisors (1).

1039989557 is an equidigital number, since it uses as much as digits as its factorization.

1039989557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3061800, while the sum is 56.

The square root of 1039989557 is about 32248.8690809461. The cubic root of 1039989557 is about 1013.1560126474.

The spelling of 1039989557 in words is "one billion, thirty-nine million, nine hundred eighty-nine thousand, five hundred fifty-seven".