70261439 has 2 divisors, whose sum is σ = 70261440. Its totient is φ = 70261438.

The previous prime is 70261393. The next prime is 70261453. The reversal of 70261439 is 93416207.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70261439 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70261489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35130719 + 35130720.

It is an arithmetic number, because the mean of its divisors is an integer number (35130720).

Almost surely, 2^70261439 is an apocalyptic number.

70261439 is a deficient number, since it is larger than the sum of its proper divisors (1).

70261439 is an equidigital number, since it uses as much as digits as its factorization.

70261439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 70261439 is about 8382.2096728727. The cubic root of 70261439 is about 412.6409709793.

The spelling of 70261439 in words is "seventy million, two hundred sixty-one thousand, four hundred thirty-nine".