913961329 has 2 divisors, whose sum is σ = 913961330. Its totient is φ = 913961328.

The previous prime is 913961311. The next prime is 913961339. The reversal of 913961329 is 923169319.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 873320704 + 40640625 = 29552^2 + 6375^2 .

It is a cyclic number.

It is not a de Polignac number, because 913961329 - 2⁵ = 913961297 is a prime.

It is not a weakly prime, because it can be changed into another prime (913961339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 456980664 + 456980665.

It is an arithmetic number, because the mean of its divisors is an integer number (456980665).

Almost surely, 2^913961329 is an apocalyptic number.

It is an amenable number.

913961329 is a deficient number, since it is larger than the sum of its proper divisors (1).

913961329 is an equidigital number, since it uses as much as digits as its factorization.

913961329 is an evil number, because the sum of its binary digits is even.

The product of its digits is 78732, while the sum is 43.

The square root of 913961329 is about 30231.7933474017. The cubic root of 913961329 is about 970.4562026688.

The spelling of 913961329 in words is "nine hundred thirteen million, nine hundred sixty-one thousand, three hundred twenty-nine".