49503809 has 2 divisors, whose sum is σ = 49503810. Its totient is φ = 49503808.

The previous prime is 49503803. The next prime is 49503823. The reversal of 49503809 is 90830594.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32718400 + 16785409 = 5720^2 + 4097^2 .

It is a cyclic number.

It is not a de Polignac number, because 49503809 - 2²⁰ = 48455233 is a prime.

It is not a weakly prime, because it can be changed into another prime (49503803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24751904 + 24751905.

It is an arithmetic number, because the mean of its divisors is an integer number (24751905).

Almost surely, 2^49503809 is an apocalyptic number.

It is an amenable number.

49503809 is a deficient number, since it is larger than the sum of its proper divisors (1).

49503809 is an equidigital number, since it uses as much as digits as its factorization.

49503809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 49503809 is about 7035.8943283708. The cubic root of 49503809 is about 367.1804407359.

The spelling of 49503809 in words is "forty-nine million, five hundred three thousand, eight hundred nine".