5649391 has 8 divisors (see below), whose sum is σ = 6181200. Its totient is φ = 5120640.

The previous prime is 5649367. The next prime is 5649401. The reversal of 5649391 is 1939465.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5649391 is a prime.

It is a Duffinian number.

5649391 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 5649391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5649311) 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, 5095 + ... + 6103.

It is an arithmetic number, because the mean of its divisors is an integer number (772650).

Almost surely, 2^5649391 is an apocalyptic number.

5649391 is a deficient number, since it is larger than the sum of its proper divisors (531809).

5649391 is a wasteful number, since it uses less digits than its factorization.

5649391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1529.

The product of its digits is 29160, while the sum is 37.

The square root of 5649391 is about 2376.8447572359. The cubic root of 5649391 is about 178.1013499328.

The spelling of 5649391 in words is "five million, six hundred forty-nine thousand, three hundred ninety-one".