911439013 has 2 divisors, whose sum is σ = 911439014. Its totient is φ = 911439012.

The previous prime is 911438959. The next prime is 911439017. The reversal of 911439013 is 310934119.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 729108004 + 182331009 = 27002^2 + 13503^2 .

It is a cyclic number.

It is not a de Polignac number, because 911439013 - 2²¹ = 909341861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (911439017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 455719506 + 455719507.

It is an arithmetic number, because the mean of its divisors is an integer number (455719507).

Almost surely, 2^911439013 is an apocalyptic number.

It is an amenable number.

911439013 is a deficient number, since it is larger than the sum of its proper divisors (1).

911439013 is an equidigital number, since it uses as much as digits as its factorization.

911439013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2916, while the sum is 31.

The square root of 911439013 is about 30190.0482444133. The cubic root of 911439013 is about 969.5626373476.

The spelling of 911439013 in words is "nine hundred eleven million, four hundred thirty-nine thousand, thirteen".