49931911 has 4 divisors (see below), whose sum is σ = 49963000. Its totient is φ = 49900824.

The previous prime is 49931909. The next prime is 49931929. The reversal of 49931911 is 11913994.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11913994 = 2 ⋅5956997.

It is a cyclic number.

It is not a de Polignac number, because 49931911 - 2¹ = 49931909 is a prime.

It is a super-2 number, since 2×49931911² = 4986391472223842, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49931971) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12996 + ... + 16393.

It is an arithmetic number, because the mean of its divisors is an integer number (12490750).

Almost surely, 2^49931911 is an apocalyptic number.

49931911 is a deficient number, since it is larger than the sum of its proper divisors (31089).

49931911 is a wasteful number, since it uses less digits than its factorization.

49931911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31088.

The product of its digits is 8748, while the sum is 37.

The square root of 49931911 is about 7066.2515522730. The cubic root of 49931911 is about 368.2358458835.

The spelling of 49931911 in words is "forty-nine million, nine hundred thirty-one thousand, nine hundred eleven".