143949679 has 2 divisors, whose sum is σ = 143949680. Its totient is φ = 143949678.

The previous prime is 143949661. The next prime is 143949703. The reversal of 143949679 is 976949341.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 143949679 - 2⁹ = 143949167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (143944679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71974839 + 71974840.

It is an arithmetic number, because the mean of its divisors is an integer number (71974840).

Almost surely, 2^143949679 is an apocalyptic number.

143949679 is a deficient number, since it is larger than the sum of its proper divisors (1).

143949679 is an equidigital number, since it uses as much as digits as its factorization.

143949679 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1469664, while the sum is 52.

The square root of 143949679 is about 11997.9031084602. The cubic root of 143949679 is about 524.0872169472.

The spelling of 143949679 in words is "one hundred forty-three million, nine hundred forty-nine thousand, six hundred seventy-nine".