70422409 has 2 divisors, whose sum is σ = 70422410. Its totient is φ = 70422408.

The previous prime is 70422377. The next prime is 70422413. The reversal of 70422409 is 90422407.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68112009 + 2310400 = 8253^2 + 1520^2 .

It is a cyclic number.

It is not a de Polignac number, because 70422409 - 2⁵ = 70422377 is a prime.

It is equal to p_4141486 and since 70422409 and 4141486 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (70422479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35211204 + 35211205.

It is an arithmetic number, because the mean of its divisors is an integer number (35211205).

Almost surely, 2^70422409 is an apocalyptic number.

It is an amenable number.

70422409 is a deficient number, since it is larger than the sum of its proper divisors (1).

70422409 is an equidigital number, since it uses as much as digits as its factorization.

70422409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 70422409 is about 8391.8060630594. The cubic root of 70422409 is about 412.9558528324.

The spelling of 70422409 in words is "seventy million, four hundred twenty-two thousand, four hundred nine".