49997787 has 12 divisors (see below), whose sum is σ = 77547816. Its totient is φ = 28570080.

The previous prime is 49997771. The next prime is 49997803. The reversal of 49997787 is 78779994.

It is an interprime number because it is at equal distance from previous prime (49997771) and next prime (49997803).

It is not a de Polignac number, because 49997787 - 2⁴ = 49997771 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 49997787.

It is not an unprimeable number, because it can be changed into a prime (49997747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 169914 + ... + 170207.

It is an arithmetic number, because the mean of its divisors is an integer number (6462318).

Almost surely, 2^49997787 is an apocalyptic number.

49997787 is a deficient number, since it is larger than the sum of its proper divisors (27550029).

49997787 is a wasteful number, since it uses less digits than its factorization.

49997787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340138 (or 340131 counting only the distinct ones).

The product of its digits is 8001504, while the sum is 60.

The square root of 49997787 is about 7070.9113274033. The cubic root of 49997787 is about 368.3977146094.

The spelling of 49997787 in words is "forty-nine million, nine hundred ninety-seven thousand, seven hundred eighty-seven".