49031891 has 8 divisors (see below), whose sum is σ = 50043840. Its totient is φ = 48026088.

The previous prime is 49031881. The next prime is 49031909. The reversal of 49031891 is 19813094.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49031891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49031881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16760 + ... + 19466.

It is an arithmetic number, because the mean of its divisors is an integer number (6255480).

Almost surely, 2^49031891 is an apocalyptic number.

49031891 is a deficient number, since it is larger than the sum of its proper divisors (1011949).

49031891 is a wasteful number, since it uses less digits than its factorization.

49031891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3073.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 49031891 is about 7002.2775580521. The cubic root of 49031891 is about 366.0099408052.

The spelling of 49031891 in words is "forty-nine million, thirty-one thousand, eight hundred ninety-one".