919290949 has 2 divisors, whose sum is σ = 919290950. Its totient is φ = 919290948.

The previous prime is 919290943. The next prime is 919291013. The reversal of 919290949 is 949092919.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 614544100 + 304746849 = 24790^2 + 17457^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-919290949 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 919290896 and 919290905.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (919290943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 459645474 + 459645475.

It is an arithmetic number, because the mean of its divisors is an integer number (459645475).

Almost surely, 2^919290949 is an apocalyptic number.

It is an amenable number.

919290949 is a deficient number, since it is larger than the sum of its proper divisors (1).

919290949 is an equidigital number, since it uses as much as digits as its factorization.

919290949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 472392, while the sum is 52.

The square root of 919290949 is about 30319.8111636600. The cubic root of 919290949 is about 972.3389014654.

The spelling of 919290949 in words is "nine hundred nineteen million, two hundred ninety thousand, nine hundred forty-nine".