49818686 has 4 divisors (see below), whose sum is σ = 74728032. Its totient is φ = 24909342.

The previous prime is 49818683. The next prime is 49818689. The reversal of 49818686 is 68681894.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (49818683) and next prime (49818689).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49818683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12454670 + ... + 12454673.

It is an arithmetic number, because the mean of its divisors is an integer number (18682008).

Almost surely, 2^49818686 is an apocalyptic number.

49818686 is a deficient number, since it is larger than the sum of its proper divisors (24909346).

49818686 is a wasteful number, since it uses less digits than its factorization.

49818686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24909345.

The product of its digits is 663552, while the sum is 50.

The square root of 49818686 is about 7058.2353318659. The cubic root of 49818686 is about 367.9572995115.

The spelling of 49818686 in words is "forty-nine million, eight hundred eighteen thousand, six hundred eighty-six".