1258939499 has 2 divisors, whose sum is σ = 1258939500. Its totient is φ = 1258939498.

The previous prime is 1258939489. The next prime is 1258939537. The reversal of 1258939499 is 9949398521.

It is a weak prime.

It is an emirp because it is prime and its reverse (9949398521) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1258939499 is a prime.

It is not a weakly prime, because it can be changed into another prime (1258939469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 629469749 + 629469750.

It is an arithmetic number, because the mean of its divisors is an integer number (629469750).

Almost surely, 2^1258939499 is an apocalyptic number.

1258939499 is a deficient number, since it is larger than the sum of its proper divisors (1).

1258939499 is an equidigital number, since it uses as much as digits as its factorization.

1258939499 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6298560, while the sum is 59.

The square root of 1258939499 is about 35481.5374385045. The cubic root of 1258939499 is about 1079.7791898256.

The spelling of 1258939499 in words is "one billion, two hundred fifty-eight million, nine hundred thirty-nine thousand, four hundred ninety-nine".