3191949 has 6 divisors (see below), whose sum is σ = 4610606. Its totient is φ = 2127960.

The previous prime is 3191927. The next prime is 3191987. The reversal of 3191949 is 9491913.

It can be written as a sum of positive squares in only one way, i.e., 3132900 + 59049 = 1770^2 + 243^2 .

It is not a de Polignac number, because 3191949 - 2⁷ = 3191821 is a prime.

It is a Duffinian number.

It is a Curzon number.

3191949 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3191999) 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, 177322 + ... + 177339.

Almost surely, 2^3191949 is an apocalyptic number.

It is an amenable number.

3191949 is a deficient number, since it is larger than the sum of its proper divisors (1418657).

3191949 is a wasteful number, since it uses less digits than its factorization.

3191949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354667 (or 354664 counting only the distinct ones).

The product of its digits is 8748, while the sum is 36.

The square root of 3191949 is about 1786.6026418877. The cubic root of 3191949 is about 147.2375722507.

Subtracting from 3191949 its sum of digits (36), we obtain a palindrome (3191913).

The spelling of 3191949 in words is "three million, one hundred ninety-one thousand, nine hundred forty-nine".