670441439 has 2 divisors, whose sum is σ = 670441440. Its totient is φ = 670441438.

The previous prime is 670441397. The next prime is 670441483. The reversal of 670441439 is 934144076.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 670441439 - 2¹² = 670437343 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 (670447439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335220719 + 335220720.

It is an arithmetic number, because the mean of its divisors is an integer number (335220720).

Almost surely, 2^670441439 is an apocalyptic number.

670441439 is a deficient number, since it is larger than the sum of its proper divisors (1).

670441439 is an equidigital number, since it uses as much as digits as its factorization.

670441439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 38.

The square root of 670441439 is about 25892.8839452078. The cubic root of 670441439 is about 875.2261462815.

The spelling of 670441439 in words is "six hundred seventy million, four hundred forty-one thousand, four hundred thirty-nine".