70437149 has 2 divisors, whose sum is σ = 70437150. Its totient is φ = 70437148.

The previous prime is 70437119. The next prime is 70437187. The reversal of 70437149 is 94173407.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38875225 + 31561924 = 6235^2 + 5618^2 .

It is an emirp because it is prime and its reverse (94173407) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70437149 is a prime.

It is a super-2 number, since 2×70437149² = 9922783918496402, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70437119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35218574 + 35218575.

It is an arithmetic number, because the mean of its divisors is an integer number (35218575).

Almost surely, 2^70437149 is an apocalyptic number.

It is an amenable number.

70437149 is a deficient number, since it is larger than the sum of its proper divisors (1).

70437149 is an equidigital number, since it uses as much as digits as its factorization.

70437149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 70437149 is about 8392.6842547543. The cubic root of 70437149 is about 412.9846625286.

The spelling of 70437149 in words is "seventy million, four hundred thirty-seven thousand, one hundred forty-nine".