49213889 has 2 divisors, whose sum is σ = 49213890. Its totient is φ = 49213888.

The previous prime is 49213877. The next prime is 49213891. The reversal of 49213889 is 98831294.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44782864 + 4431025 = 6692^2 + 2105^2 .

It is a cyclic number.

It is not a de Polignac number, because 49213889 - 2¹² = 49209793 is a prime.

It is a Sophie Germain prime.

Together with 49213891, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (49213849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24606944 + 24606945.

It is an arithmetic number, because the mean of its divisors is an integer number (24606945).

Almost surely, 2^49213889 is an apocalyptic number.

It is an amenable number.

49213889 is a deficient number, since it is larger than the sum of its proper divisors (1).

49213889 is an equidigital number, since it uses as much as digits as its factorization.

49213889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 124416, while the sum is 44.

The square root of 49213889 is about 7015.2611498076. The cubic root of 49213889 is about 366.4622371005.

The spelling of 49213889 in words is "forty-nine million, two hundred thirteen thousand, eight hundred eighty-nine".