49787669 has 2 divisors, whose sum is σ = 49787670. Its totient is φ = 49787668.

The previous prime is 49787659. The next prime is 49787671. The reversal of 49787669 is 96678794.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39225169 + 10562500 = 6263^2 + 3250^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49787669 is a prime.

It is a super-2 number, since 2×49787669² = 4957623968907122, which contains 22 as substring.

Together with 49787671, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49787629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24893834 + 24893835.

It is an arithmetic number, because the mean of its divisors is an integer number (24893835).

Almost surely, 2^49787669 is an apocalyptic number.

It is an amenable number.

49787669 is a deficient number, since it is larger than the sum of its proper divisors (1).

49787669 is an equidigital number, since it uses as much as digits as its factorization.

49787669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4572288, while the sum is 56.

The square root of 49787669 is about 7056.0377691733. The cubic root of 49787669 is about 367.8809205337.

The spelling of 49787669 in words is "forty-nine million, seven hundred eighty-seven thousand, six hundred sixty-nine".