70419989 has 2 divisors, whose sum is σ = 70419990. Its totient is φ = 70419988.

The previous prime is 70419983. The next prime is 70420027. The reversal of 70419989 is 98991407.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70392100 + 27889 = 8390^2 + 167^2 .

It is a cyclic number.

It is not a de Polignac number, because 70419989 - 2⁸ = 70419733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70419983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35209994 + 35209995.

It is an arithmetic number, because the mean of its divisors is an integer number (35209995).

Almost surely, 2^70419989 is an apocalyptic number.

It is an amenable number.

70419989 is a deficient number, since it is larger than the sum of its proper divisors (1).

70419989 is an equidigital number, since it uses as much as digits as its factorization.

70419989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 163296, while the sum is 47.

The square root of 70419989 is about 8391.6618735504. The cubic root of 70419989 is about 412.9511224981.

The spelling of 70419989 in words is "seventy million, four hundred nineteen thousand, nine hundred eighty-nine".