49819489 has 2 divisors, whose sum is σ = 49819490. Its totient is φ = 49819488.

The previous prime is 49819487. The next prime is 49819513. The reversal of 49819489 is 98491894.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40259025 + 9560464 = 6345^2 + 3092^2 .

It is a cyclic number.

It is not a de Polignac number, because 49819489 - 2¹ = 49819487 is a prime.

It is a super-2 number, since 2×49819489² = 4963962968442242, which contains 22 as substring.

Together with 49819487, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (49819487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24909744 + 24909745.

It is an arithmetic number, because the mean of its divisors is an integer number (24909745).

Almost surely, 2^49819489 is an apocalyptic number.

It is an amenable number.

49819489 is a deficient number, since it is larger than the sum of its proper divisors (1).

49819489 is an equidigital number, since it uses as much as digits as its factorization.

49819489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 746496, while the sum is 52.

The square root of 49819489 is about 7058.2922155434. The cubic root of 49819489 is about 367.9592764680.

The spelling of 49819489 in words is "forty-nine million, eight hundred nineteen thousand, four hundred eighty-nine".