739443989 has 2 divisors, whose sum is σ = 739443990. Its totient is φ = 739443988.

The previous prime is 739443983. The next prime is 739444003. The reversal of 739443989 is 989344937.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 476679889 + 262764100 = 21833^2 + 16210^2 .

It is a cyclic number.

It is not a de Polignac number, because 739443989 - 2⁴ = 739443973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (739443983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 369721994 + 369721995.

It is an arithmetic number, because the mean of its divisors is an integer number (369721995).

Almost surely, 2^739443989 is an apocalyptic number.

It is an amenable number.

739443989 is a deficient number, since it is larger than the sum of its proper divisors (1).

739443989 is an equidigital number, since it uses as much as digits as its factorization.

739443989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5878656, while the sum is 56.

The square root of 739443989 is about 27192.7194116366. The cubic root of 739443989 is about 904.2775749312.

The spelling of 739443989 in words is "seven hundred thirty-nine million, four hundred forty-three thousand, nine hundred eighty-nine".