49670287889 has 2 divisors, whose sum is σ = 49670287890. Its totient is φ = 49670287888.

The previous prime is 49670287871. The next prime is 49670287937. The reversal of 49670287889 is 98878207694.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49408398400 + 261889489 = 222280^2 + 16183^2 .

It is a cyclic number.

It is not a de Polignac number, because 49670287889 - 2³² = 45375320593 is a prime.

It is a super-2 number, since 2×49670287889² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (49610287889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24835143944 + 24835143945.

It is an arithmetic number, because the mean of its divisors is an integer number (24835143945).

Almost surely, 2^49670287889 is an apocalyptic number.

It is an amenable number.

49670287889 is a deficient number, since it is larger than the sum of its proper divisors (1).

49670287889 is an equidigital number, since it uses as much as digits as its factorization.

49670287889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 97542144, while the sum is 68.

The spelling of 49670287889 in words is "forty-nine billion, six hundred seventy million, two hundred eighty-seven thousand, eight hundred eighty-nine".