70448489 has 2 divisors, whose sum is σ = 70448490. Its totient is φ = 70448488.

The previous prime is 70448393. The next prime is 70448507. The reversal of 70448489 is 98484407.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36808489 + 33640000 = 6067^2 + 5800^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70448489 is a prime.

It is not a weakly prime, because it can be changed into another prime (70448689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35224244 + 35224245.

It is an arithmetic number, because the mean of its divisors is an integer number (35224245).

Almost surely, 2^70448489 is an apocalyptic number.

It is an amenable number.

70448489 is a deficient number, since it is larger than the sum of its proper divisors (1).

70448489 is an equidigital number, since it uses as much as digits as its factorization.

70448489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 258048, while the sum is 44.

The square root of 70448489 is about 8393.3598159497. The cubic root of 70448489 is about 413.0068241050.

The spelling of 70448489 in words is "seventy million, four hundred forty-eight thousand, four hundred eighty-nine".