49399687 has 2 divisors, whose sum is σ = 49399688. Its totient is φ = 49399686.

The previous prime is 49399663. The next prime is 49399729. The reversal of 49399687 is 78699394.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 49399687 - 2¹⁹ = 48875399 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49399087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24699843 + 24699844.

It is an arithmetic number, because the mean of its divisors is an integer number (24699844).

Almost surely, 2^49399687 is an apocalyptic number.

49399687 is a deficient number, since it is larger than the sum of its proper divisors (1).

49399687 is an equidigital number, since it uses as much as digits as its factorization.

49399687 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2939328, while the sum is 55.

The square root of 49399687 is about 7028.4910898428. The cubic root of 49399687 is about 366.9228282524.

It can be divided in two parts, 49399 and 687, that added together give a triangular number (50086 = T₃₁₆).

The spelling of 49399687 in words is "forty-nine million, three hundred ninety-nine thousand, six hundred eighty-seven".