50409949 has 2 divisors, whose sum is σ = 50409950. Its totient is φ = 50409948.

The previous prime is 50409923. The next prime is 50409977. The reversal of 50409949 is 94990405.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49632025 + 777924 = 7045^2 + 882^2 .

It is a cyclic number.

It is not a de Polignac number, because 50409949 - 2²³ = 42021341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50409349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25204974 + 25204975.

It is an arithmetic number, because the mean of its divisors is an integer number (25204975).

Almost surely, 2^50409949 is an apocalyptic number.

It is an amenable number.

50409949 is a deficient number, since it is larger than the sum of its proper divisors (1).

50409949 is an equidigital number, since it uses as much as digits as its factorization.

50409949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 58320, while the sum is 40.

The square root of 50409949 is about 7099.9964084498. The cubic root of 50409949 is about 369.4072539863.

The spelling of 50409949 in words is "fifty million, four hundred nine thousand, nine hundred forty-nine".