49138911 has 6 divisors (see below), whose sum is σ = 70978440. Its totient is φ = 32759268.

The previous prime is 49138909. The next prime is 49138919. The reversal of 49138911 is 11983194.

It is not a de Polignac number, because 49138911 - 2¹ = 49138909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49138919) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2729931 + ... + 2729948.

It is an arithmetic number, because the mean of its divisors is an integer number (11829740).

Almost surely, 2^49138911 is an apocalyptic number.

49138911 is a deficient number, since it is larger than the sum of its proper divisors (21839529).

49138911 is a wasteful number, since it uses less digits than its factorization.

49138911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5459885 (or 5459882 counting only the distinct ones).

The product of its digits is 7776, while the sum is 36.

The square root of 49138911 is about 7009.9151920690. The cubic root of 49138911 is about 366.2760391819.

It can be divided in two parts, 4913 and 8911, that added together give a cube (13824 = 24³).

The spelling of 49138911 in words is "forty-nine million, one hundred thirty-eight thousand, nine hundred eleven".