49391947 has 8 divisors (see below), whose sum is σ = 53933040. Its totient is φ = 44859360.

The previous prime is 49391939. The next prime is 49392011. The reversal of 49391947 is 74919394.

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

It is a cyclic number.

It is not a de Polignac number, because 49391947 - 2³ = 49391939 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 49391897 and 49391906.

It is not an unprimeable number, because it can be changed into a prime (49391917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21213 + ... + 23425.

It is an arithmetic number, because the mean of its divisors is an integer number (6741630).

Almost surely, 2^49391947 is an apocalyptic number.

49391947 is a deficient number, since it is larger than the sum of its proper divisors (4541093).

49391947 is a wasteful number, since it uses less digits than its factorization.

49391947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4253.

The product of its digits is 244944, while the sum is 46.

The square root of 49391947 is about 7027.9404522235. The cubic root of 49391947 is about 366.9036639540.

It can be divided in two parts, 4939 and 1947, that added together give a palindrome (6886).

The spelling of 49391947 in words is "forty-nine million, three hundred ninety-one thousand, nine hundred forty-seven".