749453129 has 2 divisors, whose sum is σ = 749453130. Its totient is φ = 749453128.

The previous prime is 749453077. The next prime is 749453189. The reversal of 749453129 is 921354947.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 532686400 + 216766729 = 23080^2 + 14723^2 .

It is an emirp because it is prime and its reverse (921354947) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 749453129 - 2¹⁶ = 749387593 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 749453129.

It is not a weakly prime, because it can be changed into another prime (749453189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 374726564 + 374726565.

It is an arithmetic number, because the mean of its divisors is an integer number (374726565).

Almost surely, 2^749453129 is an apocalyptic number.

It is an amenable number.

749453129 is a deficient number, since it is larger than the sum of its proper divisors (1).

749453129 is an equidigital number, since it uses as much as digits as its factorization.

749453129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 272160, while the sum is 44.

The square root of 749453129 is about 27376.1416017670. The cubic root of 749453129 is about 908.3394137086.

The spelling of 749453129 in words is "seven hundred forty-nine million, four hundred fifty-three thousand, one hundred twenty-nine".