49877865 has 12 divisors (see below), whose sum is σ = 86455044. Its totient is φ = 26601504.

The previous prime is 49877851. The next prime is 49877873. The reversal of 49877865 is 56877894.

49877865 is a `hidden beast` number, since 498 + 77 + 86 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 6594624 + 43283241 = 2568^2 + 6579^2 .

It is not a de Polignac number, because 49877865 - 2⁹ = 49877353 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 554154 + ... + 554243.

It is an arithmetic number, because the mean of its divisors is an integer number (7204587).

Almost surely, 2^49877865 is an apocalyptic number.

49877865 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

49877865 is a deficient number, since it is larger than the sum of its proper divisors (36577179).

49877865 is a wasteful number, since it uses less digits than its factorization.

49877865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1108408 (or 1108405 counting only the distinct ones).

The product of its digits is 3386880, while the sum is 54.

The square root of 49877865 is about 7062.4262828011. The cubic root of 49877865 is about 368.1029391649.

The spelling of 49877865 in words is "forty-nine million, eight hundred seventy-seven thousand, eight hundred sixty-five".