49685991 has 8 divisors (see below), whose sum is σ = 66286704. Its totient is φ = 33104640.

The previous prime is 49685989. The next prime is 49686001. The reversal of 49685991 is 19958694.

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

It is not a de Polignac number, because 49685991 - 2¹ = 49685989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49685921) 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, 2935 + ... + 10391.

It is an arithmetic number, because the mean of its divisors is an integer number (8285838).

Almost surely, 2^49685991 is an apocalyptic number.

49685991 is a deficient number, since it is larger than the sum of its proper divisors (16600713).

49685991 is a wasteful number, since it uses less digits than its factorization.

49685991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9681.

The product of its digits is 699840, while the sum is 51.

The square root of 49685991 is about 7048.8290516936. The cubic root of 49685991 is about 367.6303170581.

The spelling of 49685991 in words is "forty-nine million, six hundred eighty-five thousand, nine hundred ninety-one".