740673889 has 2 divisors, whose sum is σ = 740673890. Its totient is φ = 740673888.

The previous prime is 740673883. The next prime is 740673937. The reversal of 740673889 is 988376047.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 602211600 + 138462289 = 24540^2 + 11767^2 .

It is an emirp because it is prime and its reverse (988376047) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 740673889 - 2²¹ = 738576737 is a prime.

It is not a weakly prime, because it can be changed into another prime (740673883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 370336944 + 370336945.

It is an arithmetic number, because the mean of its divisors is an integer number (370336945).

Almost surely, 2^740673889 is an apocalyptic number.

It is an amenable number.

740673889 is a deficient number, since it is larger than the sum of its proper divisors (1).

740673889 is an equidigital number, since it uses as much as digits as its factorization.

740673889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2032128, while the sum is 52.

The square root of 740673889 is about 27215.3245249804. The cubic root of 740673889 is about 904.7786518480.

The spelling of 740673889 in words is "seven hundred forty million, six hundred seventy-three thousand, eight hundred eighty-nine".