49983917 has 2 divisors, whose sum is σ = 49983918. Its totient is φ = 49983916.

The previous prime is 49983883. The next prime is 49983919. The reversal of 49983917 is 71938994.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44903401 + 5080516 = 6701^2 + 2254^2 .

It is a cyclic number.

It is not a de Polignac number, because 49983917 - 2¹² = 49979821 is a prime.

Together with 49983919, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49983919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24991958 + 24991959.

It is an arithmetic number, because the mean of its divisors is an integer number (24991959).

Almost surely, 2^49983917 is an apocalyptic number.

It is an amenable number.

49983917 is a deficient number, since it is larger than the sum of its proper divisors (1).

49983917 is an equidigital number, since it uses as much as digits as its factorization.

49983917 is an evil number, because the sum of its binary digits is even.

The product of its digits is 489888, while the sum is 50.

The square root of 49983917 is about 7069.9304805634. The cubic root of 49983917 is about 368.3636454423.

The spelling of 49983917 in words is "forty-nine million, nine hundred eighty-three thousand, nine hundred seventeen".