49997986 has 8 divisors (see below), whose sum is σ = 79408620. Its totient is φ = 23528448.

The previous prime is 49997977. The next prime is 49997999. The reversal of 49997986 is 68979994.

It can be written as a sum of positive squares in 2 ways, for example, as 49970761 + 27225 = 7069^2 + 165^2 .

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

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, 735231 + ... + 735298.

Almost surely, 2^49997986 is an apocalyptic number.

49997986 is a deficient number, since it is larger than the sum of its proper divisors (29410634).

49997986 is a wasteful number, since it uses less digits than its factorization.

49997986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1470548.

The product of its digits is 8817984, while the sum is 61.

The square root of 49997986 is about 7070.9253991256. The cubic root of 49997986 is about 368.3982033713.

The spelling of 49997986 in words is "forty-nine million, nine hundred ninety-seven thousand, nine hundred eighty-six".