746580389 has 2 divisors, whose sum is σ = 746580390. Its totient is φ = 746580388.

The previous prime is 746580371. The next prime is 746580421. The reversal of 746580389 is 983085647.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 709796164 + 36784225 = 26642^2 + 6065^2 .

It is an emirp because it is prime and its reverse (983085647) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 746580389 - 2¹² = 746576293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (746580589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 373290194 + 373290195.

It is an arithmetic number, because the mean of its divisors is an integer number (373290195).

Almost surely, 2^746580389 is an apocalyptic number.

It is an amenable number.

746580389 is a deficient number, since it is larger than the sum of its proper divisors (1).

746580389 is an equidigital number, since it uses as much as digits as its factorization.

746580389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1451520, while the sum is 50.

The square root of 746580389 is about 27323.6232773035. The cubic root of 746580389 is about 907.1773378531.

The spelling of 746580389 in words is "seven hundred forty-six million, five hundred eighty thousand, three hundred eighty-nine".