49987894 has 8 divisors (see below), whose sum is σ = 81798408. Its totient is φ = 22721760.

The previous prime is 49987891. The next prime is 49987907. The reversal of 49987894 is 49878994.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49987891) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1136067 + ... + 1136110.

It is an arithmetic number, because the mean of its divisors is an integer number (10224801).

Almost surely, 2^49987894 is an apocalyptic number.

49987894 is a deficient number, since it is larger than the sum of its proper divisors (31810514).

49987894 is a wasteful number, since it uses less digits than its factorization.

49987894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2272190.

The product of its digits is 5225472, while the sum is 58.

The square root of 49987894 is about 7070.2117365748. The cubic root of 49987894 is about 368.3734148739.

Subtracting from 49987894 its reverse (49878994), we obtain a square (108900 = 330²).

The spelling of 49987894 in words is "forty-nine million, nine hundred eighty-seven thousand, eight hundred ninety-four".