49938409 has 2 divisors, whose sum is σ = 49938410. Its totient is φ = 49938408.

The previous prime is 49938407. The next prime is 49938431. The reversal of 49938409 is 90483994.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49744809 + 193600 = 7053^2 + 440^2 .

It is a cyclic number.

It is not a de Polignac number, because 49938409 - 2¹ = 49938407 is a prime.

Together with 49938407, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (49938407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24969204 + 24969205.

It is an arithmetic number, because the mean of its divisors is an integer number (24969205).

Almost surely, 2^49938409 is an apocalyptic number.

It is an amenable number.

49938409 is a deficient number, since it is larger than the sum of its proper divisors (1).

49938409 is an equidigital number, since it uses as much as digits as its factorization.

49938409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 279936, while the sum is 46.

The square root of 49938409 is about 7066.7113284752. The cubic root of 49938409 is about 368.2518189202.

The spelling of 49938409 in words is "forty-nine million, nine hundred thirty-eight thousand, four hundred nine".