49686319 has 4 divisors (see below), whose sum is σ = 50528520. Its totient is φ = 48844120.

The previous prime is 49686313. The next prime is 49686347. The reversal of 49686319 is 91368694.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91368694 = 2 ⋅45684347.

It is a cyclic number.

It is not a de Polignac number, because 49686319 - 2⁹ = 49685807 is a prime.

It is a super-2 number, since 2×49686319² = 4937460591539522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49686313) 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, 421012 + ... + 421129.

It is an arithmetic number, because the mean of its divisors is an integer number (12632130).

Almost surely, 2^49686319 is an apocalyptic number.

49686319 is a deficient number, since it is larger than the sum of its proper divisors (842201).

49686319 is an equidigital number, since it uses as much as digits as its factorization.

49686319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 842200.

The product of its digits is 279936, while the sum is 46.

The square root of 49686319 is about 7048.8523179309. The cubic root of 49686319 is about 367.6311260217.

It can be divided in two parts, 49686 and 319, that added together give a palindrome (50005).

The spelling of 49686319 in words is "forty-nine million, six hundred eighty-six thousand, three hundred nineteen".