5491949 has 4 divisors (see below), whose sum is σ = 5509920. Its totient is φ = 5473980.

The previous prime is 5491943. The next prime is 5491951. The reversal of 5491949 is 9491945.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9491945 = 5 ⋅1898389.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5491949 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5491943) 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, 8519 + ... + 9140.

It is an arithmetic number, because the mean of its divisors is an integer number (1377480).

Almost surely, 2^5491949 is an apocalyptic number.

It is an amenable number.

5491949 is a deficient number, since it is larger than the sum of its proper divisors (17971).

5491949 is a wasteful number, since it uses less digits than its factorization.

5491949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17970.

The product of its digits is 58320, while the sum is 41.

The square root of 5491949 is about 2343.4907723309. The cubic root of 5491949 is about 176.4312449046.

The spelling of 5491949 in words is "five million, four hundred ninety-one thousand, nine hundred forty-nine".