1238889007 has 2 divisors, whose sum is σ = 1238889008. Its totient is φ = 1238889006.

The previous prime is 1238888969. The next prime is 1238889017. The reversal of 1238889007 is 7009888321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1238889007 - 2⁷ = 1238888879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1238889017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 619444503 + 619444504.

It is an arithmetic number, because the mean of its divisors is an integer number (619444504).

Almost surely, 2^1238889007 is an apocalyptic number.

1238889007 is a deficient number, since it is larger than the sum of its proper divisors (1).

1238889007 is an equidigital number, since it uses as much as digits as its factorization.

1238889007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 193536, while the sum is 46.

The square root of 1238889007 is about 35197.8551477217. The cubic root of 1238889007 is about 1074.0161200183.

The spelling of 1238889007 in words is "one billion, two hundred thirty-eight million, eight hundred eighty-nine thousand, seven".