49445689 has 2 divisors, whose sum is σ = 49445690. Its totient is φ = 49445688.

The previous prime is 49445687. The next prime is 49445701. The reversal of 49445689 is 98654494.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47499664 + 1946025 = 6892^2 + 1395^2 .

It is a cyclic number.

It is not a de Polignac number, because 49445689 - 2¹ = 49445687 is a prime.

Together with 49445687, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (49445687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24722844 + 24722845.

It is an arithmetic number, because the mean of its divisors is an integer number (24722845).

Almost surely, 2^49445689 is an apocalyptic number.

It is an amenable number.

49445689 is a deficient number, since it is larger than the sum of its proper divisors (1).

49445689 is an equidigital number, since it uses as much as digits as its factorization.

49445689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1244160, while the sum is 49.

The square root of 49445689 is about 7031.7628657400. The cubic root of 49445689 is about 367.0366882670.

The spelling of 49445689 in words is "forty-nine million, four hundred forty-five thousand, six hundred eighty-nine".