70489999 has 2 divisors, whose sum is σ = 70490000. Its totient is φ = 70489998.

The previous prime is 70489987. The next prime is 70490011. The reversal of 70489999 is 99998407.

It is a balanced prime because it is at equal distance from previous prime (70489987) and next prime (70490011).

It is a cyclic number.

It is not a de Polignac number, because 70489999 - 2⁵ = 70489967 is a prime.

70489999 is a modest number, since divided by 9999 gives 7048 as remainder.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70489919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35244999 + 35245000.

It is an arithmetic number, because the mean of its divisors is an integer number (35245000).

Almost surely, 2^70489999 is an apocalyptic number.

70489999 is a deficient number, since it is larger than the sum of its proper divisors (1).

70489999 is an equidigital number, since it uses as much as digits as its factorization.

70489999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1469664, while the sum is 55.

The square root of 70489999 is about 8395.8322398676. The cubic root of 70489999 is about 413.0879261386.

The spelling of 70489999 in words is "seventy million, four hundred eighty-nine thousand, nine hundred ninety-nine".