1039997447 has 2 divisors, whose sum is σ = 1039997448. Its totient is φ = 1039997446.

The previous prime is 1039997437. The next prime is 1039997461. The reversal of 1039997447 is 7447999301.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1039997447 - 2¹² = 1039993351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1039997407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 519998723 + 519998724.

It is an arithmetic number, because the mean of its divisors is an integer number (519998724).

Almost surely, 2^1039997447 is an apocalyptic number.

1039997447 is a deficient number, since it is larger than the sum of its proper divisors (1).

1039997447 is an equidigital number, since it uses as much as digits as its factorization.

1039997447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1714608, while the sum is 53.

The square root of 1039997447 is about 32248.9914105852. The cubic root of 1039997447 is about 1013.1585747823.

The spelling of 1039997447 in words is "one billion, thirty-nine million, nine hundred ninety-seven thousand, four hundred forty-seven".