49453819 has 2 divisors, whose sum is σ = 49453820. Its totient is φ = 49453818.

The previous prime is 49453813. The next prime is 49453847. The reversal of 49453819 is 91835494.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 49453819 - 2⁹ = 49453307 is a prime.

It is a super-2 number, since 2×49453819² = 4891360427369522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (49453813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24726909 + 24726910.

It is an arithmetic number, because the mean of its divisors is an integer number (24726910).

Almost surely, 2^49453819 is an apocalyptic number.

49453819 is a deficient number, since it is larger than the sum of its proper divisors (1).

49453819 is an equidigital number, since it uses as much as digits as its factorization.

49453819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 155520, while the sum is 43.

The square root of 49453819 is about 7032.3409331459. The cubic root of 49453819 is about 367.0568035679.

The spelling of 49453819 in words is "forty-nine million, four hundred fifty-three thousand, eight hundred nineteen".