49118861 has 12 divisors (see below), whose sum is σ = 55312572. Its totient is φ = 43560000.

The previous prime is 49118851. The next prime is 49118873. The reversal of 49118861 is 16881194.

It can be written as a sum of positive squares in 2 ways, for example, as 25050025 + 24068836 = 5005^2 + 4906^2 .

It is not a de Polignac number, because 49118861 - 2¹⁰ = 49117837 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49118801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11 + ... + 9911.

It is an arithmetic number, because the mean of its divisors is an integer number (4609381).

Almost surely, 2^49118861 is an apocalyptic number.

49118861 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

49118861 is a deficient number, since it is larger than the sum of its proper divisors (6193711).

49118861 is a wasteful number, since it uses less digits than its factorization.

49118861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9964 (or 9953 counting only the distinct ones).

The product of its digits is 13824, while the sum is 38.

The square root of 49118861 is about 7008.4849289986. The cubic root of 49118861 is about 366.2262155731.

The spelling of 49118861 in words is "forty-nine million, one hundred eighteen thousand, eight hundred sixty-one".