70279439 has 2 divisors, whose sum is σ = 70279440. Its totient is φ = 70279438.

The previous prime is 70279409. The next prime is 70279459. The reversal of 70279439 is 93497207.

It is a strong prime.

It is an emirp because it is prime and its reverse (93497207) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70279439 - 2¹⁶ = 70213903 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 70279396 and 70279405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70279409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35139719 + 35139720.

It is an arithmetic number, because the mean of its divisors is an integer number (35139720).

Almost surely, 2^70279439 is an apocalyptic number.

70279439 is a deficient number, since it is larger than the sum of its proper divisors (1).

70279439 is an equidigital number, since it uses as much as digits as its factorization.

70279439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 95256, while the sum is 41.

The square root of 70279439 is about 8383.2833066764. The cubic root of 70279439 is about 412.6762055897.

The spelling of 70279439 in words is "seventy million, two hundred seventy-nine thousand, four hundred thirty-nine".