49617986 has 12 divisors (see below), whose sum is σ = 81808566. Its totient is φ = 22553520.

The previous prime is 49617983. The next prime is 49617991. The reversal of 49617986 is 68971694.

It can be written as a sum of positive squares in only one way, i.e., 27762361 + 21855625 = 5269^2 + 4675^2 .

It is not an unprimeable number, because it can be changed into a prime (49617983) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 102275 + ... + 102758.

Almost surely, 2^49617986 is an apocalyptic number.

49617986 is a deficient number, since it is larger than the sum of its proper divisors (32190580).

49617986 is a wasteful number, since it uses less digits than its factorization.

49617986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205057 (or 205046 counting only the distinct ones).

The product of its digits is 653184, while the sum is 50.

The square root of 49617986 is about 7044.0035491189. The cubic root of 49617986 is about 367.4625158060.

Subtracting from 49617986 its sum of digits (50), we obtain a square (49617936 = 7044²).

The spelling of 49617986 in words is "forty-nine million, six hundred seventeen thousand, nine hundred eighty-six".