1045239997 has 2 divisors, whose sum is σ = 1045239998. Its totient is φ = 1045239996.

The previous prime is 1045239959. The next prime is 1045240013. The reversal of 1045239997 is 7999325401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 638370756 + 406869241 = 25266^2 + 20171^2 .

It is a cyclic number.

It is not a de Polignac number, because 1045239997 - 2⁷ = 1045239869 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1045239997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1045239907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 522619998 + 522619999.

It is an arithmetic number, because the mean of its divisors is an integer number (522619999).

Almost surely, 2^1045239997 is an apocalyptic number.

It is an amenable number.

1045239997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1045239997 is an equidigital number, since it uses as much as digits as its factorization.

1045239997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 612360, while the sum is 49.

The square root of 1045239997 is about 32330.1716203301. The cubic root of 1045239997 is about 1014.8581412557.

The spelling of 1045239997 in words is "one billion, forty-five million, two hundred thirty-nine thousand, nine hundred ninety-seven".