49669686 has 112 divisors (see below), whose sum is σ = 129061440. Its totient is φ = 14171760.

The previous prime is 49669649. The next prime is 49669759. The reversal of 49669686 is 68696694.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 304641 + ... + 304803.

Almost surely, 2^49669686 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49669686, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64530720).

49669686 is an abundant number, since it is smaller than the sum of its proper divisors (79391754).

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

49669686 is a wasteful number, since it uses less digits than its factorization.

49669686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213 (or 198 counting only the distinct ones).

The product of its digits is 3359232, while the sum is 54.

The square root of 49669686 is about 7047.6723817158. The cubic root of 49669686 is about 367.5900986920.

The spelling of 49669686 in words is "forty-nine million, six hundred sixty-nine thousand, six hundred eighty-six".