911398049 has 2 divisors, whose sum is σ = 911398050. Its totient is φ = 911398048.

The previous prime is 911398039. The next prime is 911398057. The reversal of 911398049 is 940893119.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 679384225 + 232013824 = 26065^2 + 15232^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-911398049 is a prime.

It is not a weakly prime, because it can be changed into another prime (911398039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 455699024 + 455699025.

It is an arithmetic number, because the mean of its divisors is an integer number (455699025).

Almost surely, 2^911398049 is an apocalyptic number.

It is an amenable number.

911398049 is a deficient number, since it is larger than the sum of its proper divisors (1).

911398049 is an equidigital number, since it uses as much as digits as its factorization.

911398049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69984, while the sum is 44.

The square root of 911398049 is about 30189.3698013059. The cubic root of 911398049 is about 969.5481116879.

The spelling of 911398049 in words is "nine hundred eleven million, three hundred ninety-eight thousand, forty-nine".