49871816 has 16 divisors (see below), whose sum is σ = 93610140. Its totient is φ = 24909120.

The previous prime is 49871803. The next prime is 49871821. The reversal of 49871816 is 61817894.

It can be written as a sum of positive squares in 2 ways, for example, as 42954916 + 6916900 = 6554^2 + 2630^2 .

It is a super-2 number, since 2×49871816² = 4974396062275712, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6146 + ... + 11726.

Almost surely, 2^49871816 is an apocalyptic number.

It is an amenable number.

49871816 is a deficient number, since it is larger than the sum of its proper divisors (43738324).

49871816 is a wasteful number, since it uses less digits than its factorization.

49871816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6704 (or 6700 counting only the distinct ones).

The product of its digits is 96768, while the sum is 44.

The square root of 49871816 is about 7061.9980175585. The cubic root of 49871816 is about 368.0880578497.

The spelling of 49871816 in words is "forty-nine million, eight hundred seventy-one thousand, eight hundred sixteen".