738989 has 2 divisors, whose sum is σ = 738990. Its totient is φ = 738988.

The previous prime is 738977. The next prime is 739003. The reversal of 738989 is 989837.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 714025 + 24964 = 845^2 + 158^2 .

It is an emirp because it is prime and its reverse (989837) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-738989 is a prime.

It is a super-2 number, since 2×738989² = 1092209484242, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (738919) 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, 369494 + 369495.

It is an arithmetic number, because the mean of its divisors is an integer number (369495).

2⁷³⁸⁹⁸⁹ is an apocalyptic number.

It is an amenable number.

738989 is a deficient number, since it is larger than the sum of its proper divisors (1).

738989 is an equidigital number, since it uses as much as digits as its factorization.

738989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 44.

The square root of 738989 is about 859.6446940452. The cubic root of 738989 is about 90.4092065832.

The spelling of 738989 in words is "seven hundred thirty-eight thousand, nine hundred eighty-nine".