70403009 has 2 divisors, whose sum is σ = 70403010. Its totient is φ = 70403008.

The previous prime is 70402993. The next prime is 70403029. The reversal of 70403009 is 90030407.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56175025 + 14227984 = 7495^2 + 3772^2 .

It is a cyclic number.

It is not a de Polignac number, because 70403009 - 2⁴ = 70402993 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (70403029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35201504 + 35201505.

It is an arithmetic number, because the mean of its divisors is an integer number (35201505).

Almost surely, 2^70403009 is an apocalyptic number.

It is an amenable number.

70403009 is a deficient number, since it is larger than the sum of its proper divisors (1).

70403009 is an equidigital number, since it uses as much as digits as its factorization.

70403009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 70403009 is about 8390.6500940034. The cubic root of 70403009 is about 412.9179289223.

The spelling of 70403009 in words is "seventy million, four hundred three thousand, nine".