913421533 has 2 divisors, whose sum is σ = 913421534. Its totient is φ = 913421532.

The previous prime is 913421521. The next prime is 913421569. The reversal of 913421533 is 335124319.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 590392804 + 323028729 = 24298^2 + 17973^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-913421533 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 913421495 and 913421504.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (913421833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 456710766 + 456710767.

It is an arithmetic number, because the mean of its divisors is an integer number (456710767).

Almost surely, 2^913421533 is an apocalyptic number.

It is an amenable number.

913421533 is a deficient number, since it is larger than the sum of its proper divisors (1).

913421533 is an equidigital number, since it uses as much as digits as its factorization.

913421533 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9720, while the sum is 31.

The square root of 913421533 is about 30222.8644075971. The cubic root of 913421533 is about 970.2651108710.

The spelling of 913421533 in words is "nine hundred thirteen million, four hundred twenty-one thousand, five hundred thirty-three".