49693686 has 64 divisors (see below), whose sum is σ = 121927680. Its totient is φ = 13178880.

The previous prime is 49693667. The next prime is 49693691. The reversal of 49693686 is 68639694.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 55966 + ... + 56846.

It is an arithmetic number, because the mean of its divisors is an integer number (1905120).

Almost surely, 2^49693686 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49693686, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60963840).

49693686 is an abundant number, since it is smaller than the sum of its proper divisors (72233994).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

49693686 is a wasteful number, since it uses less digits than its factorization.

49693686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 989.

The product of its digits is 1679616, while the sum is 51.

The square root of 49693686 is about 7049.3748659012. The cubic root of 49693686 is about 367.6492947029.

The spelling of 49693686 in words is "forty-nine million, six hundred ninety-three thousand, six hundred eighty-six".