49726891 has 4 divisors (see below), whose sum is σ = 50939784. Its totient is φ = 48514000.

The previous prime is 49726889. The next prime is 49726903. The reversal of 49726891 is 19862794.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 49726891 - 2¹ = 49726889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49726801) 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, 606385 + ... + 606466.

It is an arithmetic number, because the mean of its divisors is an integer number (12734946).

Almost surely, 2^49726891 is an apocalyptic number.

49726891 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

49726891 is a deficient number, since it is larger than the sum of its proper divisors (1212893).

49726891 is a wasteful number, since it uses less digits than its factorization.

49726891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1212892.

The product of its digits is 217728, while the sum is 46.

The square root of 49726891 is about 7051.7296459805. The cubic root of 49726891 is about 367.7311634322.

The spelling of 49726891 in words is "forty-nine million, seven hundred twenty-six thousand, eight hundred ninety-one".